Fatal error SocketException: The socket has been shut down

I’m quite new to this and wanted an online equivalent of Apple’s TimeMachine. So I have setup Duplicati to use a specially created account on my Stack (TransIP cloud storage).
It used to work, but I wanted to make sure older backups were removed, so I choose to recreate the account to start fresh and changed the backup-policy to “Delete older than 30 days”.
The backups are being made, as I can see from the storage in the Stack-account, but stop each time with this errors:

2024-07-05 18:18:32 +02 - [Error-Duplicati.Library.Main.Operation.BackupHandler-FatalError]: Fatal error
SocketException: The socket has been shut down
2024-07-05 18:18:33 +02 - [Error-Duplicati.Library.Main.Controller-FailedOperation]: The operation Backup has failed with error: One or more errors occurred. (The socket has been shut down (The socket has been shut down) (One or more errors occurred. (The socket has been shut down)))
AggregateException: One or more errors occurred. (The socket has been shut down (The socket has been shut down) (One or more errors occurred. (The socket has been shut down)))

I have asked TransIP for help, but they say they can’t tell what is going on from the logs. Can someone help out: complete log:

            {
  "DeletedFiles": 5699,
  "DeletedFolders": 1960,
  "ModifiedFiles": 690,
  "ExaminedFiles": 354193,
  "OpenedFiles": 10680,
  "AddedFiles": 9990,
  "SizeOfModifiedFiles": 870194865,
  "SizeOfAddedFiles": 3321509306,
  "SizeOfExaminedFiles": 190115856223,
  "SizeOfOpenedFiles": 4208096495,
  "NotProcessedFiles": 0,
  "AddedFolders": 916,
  "TooLargeFiles": 0,
  "FilesWithError": 0,
  "ModifiedFolders": 0,
  "ModifiedSymlinks": 0,
  "AddedSymlinks": 0,
  "DeletedSymlinks": 1724,
  "PartialBackup": false,
  "Dryrun": false,
  "MainOperation": "Backup",
  "CompactResults": null,
  "VacuumResults": null,
  "DeleteResults": null,
  "RepairResults": null,
  "TestResults": null,
  "ParsedResult": "Fatal",
  "Interrupted": false,
  "Version": "2.0.8.1 (2.0.8.1_beta_2024-05-07)",
  "EndTime": "2024-07-05T16:18:33.301744Z",
  "BeginTime": "2024-07-05T15:58:42.925832Z",
  "Duration": "00:19:50.3759120",
  "MessagesActualLength": 132,
  "WarningsActualLength": 774,
  "ErrorsActualLength": 2,
  "Messages": [
    "2024-07-05 17:58:43 +02 - [Information-GetGpgProgramPath-gpg]: gpg",
    "2024-07-05 17:58:43 +02 - [Information-Duplicati.Library.Main.Controller-StartingOperation]: The operation Backup has started",
    "2024-07-05 18:00:24 +02 - [Information-Duplicati.Library.Main.BasicResults-BackendEvent]: Backend event: List - Started:  ()",
    "2024-07-05 18:00:30 +02 - [Information-Duplicati.Library.Main.BasicResults-BackendEvent]: Backend event: List - Completed:  (14.81 KB)",
    "2024-07-05 18:00:30 +02 - [Information-Duplicati.Library.Main.Operation.FilelistProcessor-RemoteUnwantedMissingFile]: removing file listed as Temporary: duplicati-20240704T095220Z.dlist.zip.aes",
    "2024-07-05 18:00:31 +02 - [Information-Duplicati.Library.Main.Operation.FilelistProcessor-SchedulingMissingFileForDelete]: scheduling missing file for deletion, currently listed as Uploading: duplicati-20240704T095221Z.dlist.zip.aes",
    "2024-07-05 18:00:31 +02 - [Information-Duplicati.Library.Main.Operation.FilelistProcessor-KeepIncompleteFile]: keeping protected incomplete remote file listed as Uploading: duplicati-20240705T051300Z.dlist.zip.aes",
    "2024-07-05 18:00:31 +02 - [Information-Duplicati.Library.Main.Operation.FilelistProcessor-SchedulingMissingFileForDelete]: scheduling missing file for deletion, currently listed as Uploading: duplicati-b214f0a845a82477596958400cb75ea59.dblock.zip.aes",
    "2024-07-05 18:00:31 +02 - [Information-Duplicati.Library.Main.Operation.FilelistProcessor-SchedulingMissingFileForDelete]: scheduling missing file for deletion, currently listed as Uploading: duplicati-b5ddb8697bae94dafa6ee8f0027c855c3.dblock.zip.aes",
    "2024-07-05 18:00:31 +02 - [Information-Duplicati.Library.Main.Operation.FilelistProcessor-SchedulingMissingFileForDelete]: scheduling missing file for deletion, currently listed as Uploading: duplicati-b0f32f3d0e80844aca8dc21494f1420fe.dblock.zip.aes",
    "2024-07-05 18:00:31 +02 - [Information-Duplicati.Library.Main.Operation.FilelistProcessor-SchedulingMissingFileForDelete]: scheduling missing file for deletion, currently listed as Uploading: duplicati-b47c136f5d7b245ad9af2be0c06415c32.dblock.zip.aes",
    "2024-07-05 18:00:31 +02 - [Information-Duplicati.Library.Main.Operation.FilelistProcessor-SchedulingMissingFileForDelete]: scheduling missing file for deletion, currently listed as Uploading: duplicati-b24ba41d341024578a43eec4070a1b9f6.dblock.zip.aes",
    "2024-07-05 18:00:31 +02 - [Information-Duplicati.Library.Main.Operation.FilelistProcessor-SchedulingMissingFileForDelete]: scheduling missing file for deletion, currently listed as Uploading: duplicati-b080203f32a8e4f538763cef93c9fe406.dblock.zip.aes",
    "2024-07-05 18:00:31 +02 - [Information-Duplicati.Library.Main.Operation.FilelistProcessor-SchedulingMissingFileForDelete]: scheduling missing file for deletion, currently listed as Uploading: duplicati-b65a78017ffca485eb047ac4243b08e42.dblock.zip.aes",
    "2024-07-05 18:00:31 +02 - [Information-Duplicati.Library.Main.Operation.FilelistProcessor-SchedulingMissingFileForDelete]: scheduling missing file for deletion, currently listed as Uploading: duplicati-be6f0c9b49f1646c3a79eaaa736a599c7.dblock.zip.aes",
    "2024-07-05 18:00:31 +02 - [Information-Duplicati.Library.Main.Operation.FilelistProcessor-SchedulingMissingFileForDelete]: scheduling missing file for deletion, currently listed as Uploading: duplicati-b5fdc748fad5349a88297ebdc69b8ad8e.dblock.zip.aes",
    "2024-07-05 18:00:31 +02 - [Information-Duplicati.Library.Main.Operation.FilelistProcessor-SchedulingMissingFileForDelete]: scheduling missing file for deletion, currently listed as Uploading: duplicati-b081a00c8d1b044bf89fab5ccff67a117.dblock.zip.aes",
    "2024-07-05 18:00:31 +02 - [Information-Duplicati.Library.Main.Operation.FilelistProcessor-RemoteUnwantedMissingFile]: removing file listed as Deleting: duplicati-b6b9c9c6f459f4b81a078a0b43ce12220.dblock.zip.aes",
    "2024-07-05 18:00:31 +02 - [Information-Duplicati.Library.Main.Operation.FilelistProcessor-RemoteUnwantedMissingFile]: removing file listed as Deleting: duplicati-b0da30af2e52a4f23afbd18abc5d390bc.dblock.zip.aes",
    "2024-07-05 18:00:31 +02 - [Information-Duplicati.Library.Main.Operation.FilelistProcessor-RemoteUnwantedMissingFile]: removing file listed as Deleting: duplicati-bc69b226a25a74fa68f0c3339eb2ceb41.dblock.zip.aes"
  ],
  "Warnings": [
    "2024-07-05 18:01:39 +02 - [Warning-Duplicati.Library.Main.Operation.Backup.FileEnumerationProcess-FileAccessError]: Error reported while accessing file: /Library/Caches/com.apple.aned/\nUnauthorizedAccessException: Access to the path '/Library/Caches/com.apple.aned' is denied.",
    "2024-07-05 18:01:39 +02 - [Warning-Duplicati.Library.Main.Operation.Backup.FileEnumerationProcess-PathProcessingError]: Failed to process path: /Library/Caches/com.apple.aned/\nInvalidOperationException: Operation not permitted",
    "2024-07-05 18:01:39 +02 - [Warning-Duplicati.Library.Main.Operation.Backup.FileEnumerationProcess-FileAccessError]: Error reported while accessing file: /Library/Caches/com.apple.iconservices.store/\nUnauthorizedAccessException: Access to the path '/Library/Caches/com.apple.iconservices.store' is denied.",
    "2024-07-05 18:01:39 +02 - [Warning-Duplicati.Library.Main.Operation.Backup.FileEnumerationProcess-FileAccessError]: Error reported while accessing file: /Library/Caches/com.apple.iconservices.store/\nUnauthorizedAccessException: Access to the path '/Library/Caches/com.apple.iconservices.store' is denied.",
    "2024-07-05 18:01:39 +02 - [Warning-Duplicati.Library.Main.Operation.Backup.FileEnumerationProcess-FileAccessError]: Error reported while accessing file: /Library/Caches/Desktop Pictures/858CF8BC-A8F9-4A94-A91E-71FE5B688029/\nUnauthorizedAccessException: Access to the path '/Library/Caches/Desktop Pictures/858CF8BC-A8F9-4A94-A91E-71FE5B688029' is denied.",
    "2024-07-05 18:01:39 +02 - [Warning-Duplicati.Library.Main.Operation.Backup.FileEnumerationProcess-FileAccessError]: Error reported while accessing file: /Library/Caches/Desktop Pictures/858CF8BC-A8F9-4A94-A91E-71FE5B688029/\nUnauthorizedAccessException: Access to the path '/Library/Caches/Desktop Pictures/858CF8BC-A8F9-4A94-A91E-71FE5B688029' is denied.",
    "2024-07-05 18:01:40 +02 - [Warning-Duplicati.Library.Main.Operation.Backup.FileEnumerationProcess-FileAccessError]: Error reported while accessing file: /Library/Caches/com.apple.aned/\nUnauthorizedAccessException: Access to the path '/Library/Caches/com.apple.aned' is denied.",
    "2024-07-05 18:01:40 +02 - [Warning-Duplicati.Library.Main.Operation.Backup.FileEnumerationProcess-PathProcessingError]: Failed to process path: /Library/Caches/com.apple.aned/\nInvalidOperationException: Operation not permitted",
    "2024-07-05 18:01:40 +02 - [Warning-Duplicati.Library.Main.Operation.Backup.FileEnumerationProcess-FileAccessError]: Error reported while accessing file: /Library/Caches/com.apple.iconservices.store/\nUnauthorizedAccessException: Access to the path '/Library/Caches/com.apple.iconservices.store' is denied.",
    "2024-07-05 18:01:40 +02 - [Warning-Duplicati.Library.Main.Operation.Backup.FileEnumerationProcess-FileAccessError]: Error reported while accessing file: /Library/Caches/com.apple.iconservices.store/\nUnauthorizedAccessException: Access to the path '/Library/Caches/com.apple.iconservices.store' is denied.",
    "2024-07-05 18:01:40 +02 - [Warning-Duplicati.Library.Main.Operation.Backup.MetadataGenerator.Metadata-MetadataProcessFailed]: Failed to process metadata for \"/Library/Caches/com.apple.iconservices.store/\", storing empty metadata\nFileAccesException: Unable to access the file \"/Library/Caches/com.apple.iconservices.store\" with method listxattr, error: EACCES (13)",
    "2024-07-05 18:01:40 +02 - [Warning-Duplicati.Library.Main.Operation.Backup.FileEnumerationProcess-FileAccessError]: Error reported while accessing file: /Library/Caches/Desktop Pictures/858CF8BC-A8F9-4A94-A91E-71FE5B688029/\nUnauthorizedAccessException: Access to the path '/Library/Caches/Desktop Pictures/858CF8BC-A8F9-4A94-A91E-71FE5B688029' is denied.",
    "2024-07-05 18:01:40 +02 - [Warning-Duplicati.Library.Main.Operation.Backup.MetadataGenerator.Metadata-MetadataProcessFailed]: Failed to process metadata for \"/Library/Caches/Desktop Pictures/858CF8BC-A8F9-4A94-A91E-71FE5B688029/\", storing empty metadata\nFileAccesException: Unable to access the file \"/Library/Caches/Desktop Pictures/858CF8BC-A8F9-4A94-A91E-71FE5B688029\" with method listxattr, error: EACCES (13)",
    "2024-07-05 18:01:40 +02 - [Warning-Duplicati.Library.Main.Operation.Backup.FileEnumerationProcess-FileAccessError]: Error reported while accessing file: /Library/Caches/Desktop Pictures/858CF8BC-A8F9-4A94-A91E-71FE5B688029/\nUnauthorizedAccessException: Access to the path '/Library/Caches/Desktop Pictures/858CF8BC-A8F9-4A94-A91E-71FE5B688029' is denied.",
    "2024-07-05 18:01:40 +02 - [Warning-Duplicati.Library.Main.Operation.Backup.MetadataGenerator.Metadata-MetadataProcessFailed]: Failed to process metadata for \"/Library/Caches/ColorSync/com.apple.colorsync.devices\", storing empty metadata\nFileAccesException: Unable to access the file \"/Library/Caches/ColorSync/com.apple.colorsync.devices\" with method listxattr, error: EACCES (13)",
    "2024-07-05 18:01:40 +02 - [Warning-Duplicati.Library.Main.Operation.Backup.FileBlockProcessor.FileEntry-PathProcessingFailed]: Failed to process path: /Library/Caches/ColorSync/com.apple.colorsync.devices\nUnauthorizedAccessException: Access to the path \"/Library/Caches/ColorSync/com.apple.colorsync.devices\" is denied.",
    "2024-07-05 18:01:41 +02 - [Warning-Duplicati.Library.Main.Operation.Backup.MetadataGenerator.Metadata-MetadataProcessFailed]: Failed to process metadata for \"/Library/Fonts/VBVESREG.otf\", storing empty metadata\nFileAccesException: Unable to access the file \"/Library/Fonts/VBVESREG.otf\" with method listxattr, error: EACCES (13)",
    "2024-07-05 18:01:41 +02 - [Warning-Duplicati.Library.Main.Operation.Backup.FileBlockProcessor.FileEntry-PathProcessingFailed]: Failed to process path: /Library/Fonts/VBVESREG.otf\nUnauthorizedAccessException: Access to the path \"/Library/Fonts/VBVESREG.otf\" is denied.",
    "2024-07-05 18:01:41 +02 - [Warning-Duplicati.Library.Main.Operation.Backup.MetadataGenerator.Metadata-MetadataProcessFailed]: Failed to process metadata for \"/Library/Fonts/Glober Bold Free.otf\", storing empty metadata\nFileAccesException: Unable to access the file \"/Library/Fonts/Glober Bold Free.otf\" with method listxattr, error: EACCES (13)",
    "2024-07-05 18:01:41 +02 - [Warning-Duplicati.Library.Main.Operation.Backup.FileBlockProcessor.FileEntry-PathProcessingFailed]: Failed to process path: /Library/Fonts/Glober Bold Free.otf\nUnauthorizedAccessException: Access to the path \"/Library/Fonts/Glober Bold Free.otf\" is denied."
  ],
  "Errors": [
    "2024-07-05 18:18:32 +02 - [Error-Duplicati.Library.Main.Operation.BackupHandler-FatalError]: Fatal error\nSocketException: The socket has been shut down",
    "2024-07-05 18:18:33 +02 - [Error-Duplicati.Library.Main.Controller-FailedOperation]: The operation Backup has failed with error: One or more errors occurred. (The socket has been shut down (The socket has been shut down) (One or more errors occurred. (The socket has been shut down)))\nAggregateException: One or more errors occurred. (The socket has been shut down (The socket has been shut down) (One or more errors occurred. (The socket has been shut down)))"
  ],
  "BackendStatistics": {
    "RemoteCalls": 23,
    "BytesUploaded": 0,
    "BytesDownloaded": 0,
    "FilesUploaded": 0,
    "FilesDownloaded": 0,
    "FilesDeleted": 0,
    "FoldersCreated": 0,
    "RetryAttempts": 20,
    "UnknownFileSize": 1474828,
    "UnknownFileCount": 1,
    "KnownFileCount": 15167,
    "KnownFileSize": 397550488787,
    "LastBackupDate": "0001-01-01T00:00:00",
    "BackupListCount": 3,
    "TotalQuotaSpace": 0,
    "FreeQuotaSpace": 0,
    "AssignedQuotaSpace": -1,
    "ReportedQuotaError": false,
    "ReportedQuotaWarning": false,
    "MainOperation": "Backup",
    "ParsedResult": "Success",
    "Interrupted": false,
    "Version": "2.0.8.1 (2.0.8.1_beta_2024-05-07)",
    "EndTime": "0001-01-01T00:00:00",
    "BeginTime": "2024-07-05T15:58:42.929122Z",
    "Duration": "00:00:00",
    "MessagesActualLength": 0,
    "WarningsActualLength": 0,
    "ErrorsActualLength": 0,
    "Messages": null,
    "Warnings": null,
    "Errors": null
  }
}

Update: tried again yesterday: was busy over 10 hours and over 550GB has been uploaded, but still: fatal error:


Full Log:

            {
  "DeletedFiles": 44781,
  "DeletedFolders": 3606,
  "ModifiedFiles": 2840,
  "ExaminedFiles": 477221,
  "OpenedFiles": 181301,
  "AddedFiles": 178461,
  "SizeOfModifiedFiles": 1621958202,
  "SizeOfAddedFiles": 519715215189,
  "SizeOfExaminedFiles": 695070882003,
  "SizeOfOpenedFiles": 522473153199,
  "NotProcessedFiles": 0,
  "AddedFolders": 21891,
  "TooLargeFiles": 0,
  "FilesWithError": 0,
  "ModifiedFolders": 0,
  "ModifiedSymlinks": 0,
  "AddedSymlinks": 2266,
  "DeletedSymlinks": 4,
  "PartialBackup": false,
  "Dryrun": false,
  "MainOperation": "Backup",
  "CompactResults": null,
  "VacuumResults": null,
  "DeleteResults": null,
  "RepairResults": null,
  "TestResults": null,
  "ParsedResult": "Fatal",
  "Interrupted": false,
  "Version": "2.0.8.1 (2.0.8.1_beta_2024-05-07)",
  "EndTime": "2024-07-13T22:21:09.368201Z",
  "BeginTime": "2024-07-13T11:32:22.618377Z",
  "Duration": "10:48:46.7498240",
  "MessagesActualLength": 14401,
  "WarningsActualLength": 910,
  "ErrorsActualLength": 2,
  "Messages": [
    "2024-07-13 13:32:23 +02 - [Information-GetGpgProgramPath-gpg]: gpg",
    "2024-07-13 13:32:23 +02 - [Information-Duplicati.Library.Main.Controller-StartingOperation]: The operation Backup has started",
    "2024-07-13 13:34:00 +02 - [Information-Duplicati.Library.Main.BasicResults-BackendEvent]: Backend event: List - Started:  ()",
    "2024-07-13 13:34:13 +02 - [Information-Duplicati.Library.Main.BasicResults-BackendEvent]: Backend event: List - Completed:  (14.81 KB)",
    "2024-07-13 13:34:15 +02 - [Information-Duplicati.Library.Main.Operation.FilelistProcessor-RemoteUnwantedMissingFile]: removing file listed as Temporary: duplicati-20240705T051300Z.dlist.zip.aes",
    "2024-07-13 13:34:15 +02 - [Information-Duplicati.Library.Main.Operation.FilelistProcessor-SchedulingMissingFileForDelete]: scheduling missing file for deletion, currently listed as Uploading: duplicati-20240705T051301Z.dlist.zip.aes",
    "2024-07-13 13:34:15 +02 - [Information-Duplicati.Library.Main.Operation.FilelistProcessor-KeepIncompleteFile]: keeping protected incomplete remote file listed as Uploading: duplicati-20240705T155843Z.dlist.zip.aes",
    "2024-07-13 13:34:15 +02 - [Information-Duplicati.Library.Main.Operation.FilelistProcessor-SchedulingMissingFileForDelete]: scheduling missing file for deletion, currently listed as Uploading: duplicati-b69d14823a0804f33955028ee90aeabe2.dblock.zip.aes",
    "2024-07-13 13:34:15 +02 - [Information-Duplicati.Library.Main.Operation.FilelistProcessor-SchedulingMissingFileForDelete]: scheduling missing file for deletion, currently listed as Uploading: duplicati-b0021e2b2836b47a98ab41a89e7b0b3b5.dblock.zip.aes",
    "2024-07-13 13:34:15 +02 - [Information-Duplicati.Library.Main.Operation.FilelistProcessor-SchedulingMissingFileForDelete]: scheduling missing file for deletion, currently listed as Uploading: duplicati-b7579a68a5a404068b24d36ddaa8364be.dblock.zip.aes",
    "2024-07-13 13:34:15 +02 - [Information-Duplicati.Library.Main.Operation.FilelistProcessor-SchedulingMissingFileForDelete]: scheduling missing file for deletion, currently listed as Uploading: duplicati-b2a4477b4ffb64f949124323bd54d69d1.dblock.zip.aes",
    "2024-07-13 13:34:15 +02 - [Information-Duplicati.Library.Main.Operation.FilelistProcessor-SchedulingMissingFileForDelete]: scheduling missing file for deletion, currently listed as Uploading: duplicati-b1c4ea8ce96754f8aafe1200aca864d01.dblock.zip.aes",
    "2024-07-13 13:34:15 +02 - [Information-Duplicati.Library.Main.Operation.FilelistProcessor-SchedulingMissingFileForDelete]: scheduling missing file for deletion, currently listed as Uploading: duplicati-b87c6da238b03409c8184e4a9b1bd70bf.dblock.zip.aes",
    "2024-07-13 13:34:15 +02 - [Information-Duplicati.Library.Main.Operation.FilelistProcessor-SchedulingMissingFileForDelete]: scheduling missing file for deletion, currently listed as Uploading: duplicati-bf190360fa62e4eda84ab3fd489806f41.dblock.zip.aes",
    "2024-07-13 13:34:15 +02 - [Information-Duplicati.Library.Main.Operation.FilelistProcessor-SchedulingMissingFileForDelete]: scheduling missing file for deletion, currently listed as Uploading: duplicati-bc0463cafbc0e477ab7c1b4219a8baf62.dblock.zip.aes",
    "2024-07-13 13:34:15 +02 - [Information-Duplicati.Library.Main.Operation.FilelistProcessor-SchedulingMissingFileForDelete]: scheduling missing file for deletion, currently listed as Uploading: duplicati-ba586b5e81d1249ad9a62f00d92dc235b.dblock.zip.aes",
    "2024-07-13 13:34:15 +02 - [Information-Duplicati.Library.Main.Operation.FilelistProcessor-SchedulingMissingFileForDelete]: scheduling missing file for deletion, currently listed as Uploading: duplicati-bed3ea8e31e6f4730957cfa661806cf13.dblock.zip.aes",
    "2024-07-13 13:34:15 +02 - [Information-Duplicati.Library.Main.Operation.FilelistProcessor-RemoteUnwantedMissingFile]: removing file listed as Deleting: duplicati-bc8475c1d674b4b39abe431167a79fdcb.dblock.zip.aes",
    "2024-07-13 13:34:15 +02 - [Information-Duplicati.Library.Main.Operation.FilelistProcessor-RemoteUnwantedMissingFile]: removing file listed as Deleting: duplicati-b9a4d3088999541fcb56c1d87379e4679.dblock.zip.aes",
    "2024-07-13 13:34:15 +02 - [Information-Duplicati.Library.Main.Operation.FilelistProcessor-RemoteUnwantedMissingFile]: removing file listed as Deleting: duplicati-b3453a176167e408d8caa750b279083e1.dblock.zip.aes"
  ],
  "Warnings": [
    "2024-07-13 13:35:28 +02 - [Warning-Duplicati.Library.Main.Operation.Backup.FileEnumerationProcess-FileAccessError]: Error reported while accessing file: /Library/Caches/com.apple.aned/\nUnauthorizedAccessException: Access to the path '/Library/Caches/com.apple.aned' is denied.",
    "2024-07-13 13:35:28 +02 - [Warning-Duplicati.Library.Main.Operation.Backup.FileEnumerationProcess-PathProcessingError]: Failed to process path: /Library/Caches/com.apple.aned/\nInvalidOperationException: Operation not permitted",
    "2024-07-13 13:35:28 +02 - [Warning-Duplicati.Library.Main.Operation.Backup.FileEnumerationProcess-FileAccessError]: Error reported while accessing file: /Library/Caches/com.apple.iconservices.store/\nUnauthorizedAccessException: Access to the path '/Library/Caches/com.apple.iconservices.store' is denied.",
    "2024-07-13 13:35:28 +02 - [Warning-Duplicati.Library.Main.Operation.Backup.FileEnumerationProcess-FileAccessError]: Error reported while accessing file: /Library/Caches/com.apple.iconservices.store/\nUnauthorizedAccessException: Access to the path '/Library/Caches/com.apple.iconservices.store' is denied.",
    "2024-07-13 13:35:28 +02 - [Warning-Duplicati.Library.Main.Operation.Backup.FileEnumerationProcess-FileAccessError]: Error reported while accessing file: /Library/Caches/Desktop Pictures/858CF8BC-A8F9-4A94-A91E-71FE5B688029/\nUnauthorizedAccessException: Access to the path '/Library/Caches/Desktop Pictures/858CF8BC-A8F9-4A94-A91E-71FE5B688029' is denied.",
    "2024-07-13 13:35:28 +02 - [Warning-Duplicati.Library.Main.Operation.Backup.FileEnumerationProcess-FileAccessError]: Error reported while accessing file: /Library/Caches/Desktop Pictures/858CF8BC-A8F9-4A94-A91E-71FE5B688029/\nUnauthorizedAccessException: Access to the path '/Library/Caches/Desktop Pictures/858CF8BC-A8F9-4A94-A91E-71FE5B688029' is denied.",
    "2024-07-13 13:35:29 +02 - [Warning-Duplicati.Library.Main.Operation.Backup.FileEnumerationProcess-FileAccessError]: Error reported while accessing file: /Library/Caches/com.apple.aned/\nUnauthorizedAccessException: Access to the path '/Library/Caches/com.apple.aned' is denied.",
    "2024-07-13 13:35:29 +02 - [Warning-Duplicati.Library.Main.Operation.Backup.FileEnumerationProcess-PathProcessingError]: Failed to process path: /Library/Caches/com.apple.aned/\nInvalidOperationException: Operation not permitted",
    "2024-07-13 13:35:29 +02 - [Warning-Duplicati.Library.Main.Operation.Backup.FileEnumerationProcess-FileAccessError]: Error reported while accessing file: /Library/Caches/com.apple.iconservices.store/\nUnauthorizedAccessException: Access to the path '/Library/Caches/com.apple.iconservices.store' is denied.",
    "2024-07-13 13:35:29 +02 - [Warning-Duplicati.Library.Main.Operation.Backup.FileEnumerationProcess-FileAccessError]: Error reported while accessing file: /Library/Caches/com.apple.iconservices.store/\nUnauthorizedAccessException: Access to the path '/Library/Caches/com.apple.iconservices.store' is denied.",
    "2024-07-13 13:35:29 +02 - [Warning-Duplicati.Library.Main.Operation.Backup.MetadataGenerator.Metadata-MetadataProcessFailed]: Failed to process metadata for \"/Library/Caches/com.apple.iconservices.store/\", storing empty metadata\nFileAccesException: Unable to access the file \"/Library/Caches/com.apple.iconservices.store\" with method listxattr, error: EACCES (13)",
    "2024-07-13 13:35:29 +02 - [Warning-Duplicati.Library.Main.Operation.Backup.FileEnumerationProcess-FileAccessError]: Error reported while accessing file: /Library/Caches/Desktop Pictures/858CF8BC-A8F9-4A94-A91E-71FE5B688029/\nUnauthorizedAccessException: Access to the path '/Library/Caches/Desktop Pictures/858CF8BC-A8F9-4A94-A91E-71FE5B688029' is denied.",
    "2024-07-13 13:35:29 +02 - [Warning-Duplicati.Library.Main.Operation.Backup.FileEnumerationProcess-FileAccessError]: Error reported while accessing file: /Library/Caches/Desktop Pictures/858CF8BC-A8F9-4A94-A91E-71FE5B688029/\nUnauthorizedAccessException: Access to the path '/Library/Caches/Desktop Pictures/858CF8BC-A8F9-4A94-A91E-71FE5B688029' is denied.",
    "2024-07-13 13:35:29 +02 - [Warning-Duplicati.Library.Main.Operation.Backup.MetadataGenerator.Metadata-MetadataProcessFailed]: Failed to process metadata for \"/Library/Caches/Desktop Pictures/858CF8BC-A8F9-4A94-A91E-71FE5B688029/\", storing empty metadata\nFileAccesException: Unable to access the file \"/Library/Caches/Desktop Pictures/858CF8BC-A8F9-4A94-A91E-71FE5B688029\" with method listxattr, error: EACCES (13)",
    "2024-07-13 13:35:29 +02 - [Warning-Duplicati.Library.Main.Operation.Backup.MetadataGenerator.Metadata-MetadataProcessFailed]: Failed to process metadata for \"/Library/Caches/ColorSync/com.apple.colorsync.devices\", storing empty metadata\nFileAccesException: Unable to access the file \"/Library/Caches/ColorSync/com.apple.colorsync.devices\" with method listxattr, error: EACCES (13)",
    "2024-07-13 13:35:29 +02 - [Warning-Duplicati.Library.Main.Operation.Backup.FileBlockProcessor.FileEntry-PathProcessingFailed]: Failed to process path: /Library/Caches/ColorSync/com.apple.colorsync.devices\nUnauthorizedAccessException: Access to the path \"/Library/Caches/ColorSync/com.apple.colorsync.devices\" is denied.",
    "2024-07-13 13:35:31 +02 - [Warning-Duplicati.Library.Main.Operation.Backup.MetadataGenerator.Metadata-MetadataProcessFailed]: Failed to process metadata for \"/Library/Fonts/VBVESREG.otf\", storing empty metadata\nFileAccesException: Unable to access the file \"/Library/Fonts/VBVESREG.otf\" with method listxattr, error: EACCES (13)",
    "2024-07-13 13:35:31 +02 - [Warning-Duplicati.Library.Main.Operation.Backup.FileBlockProcessor.FileEntry-PathProcessingFailed]: Failed to process path: /Library/Fonts/VBVESREG.otf\nUnauthorizedAccessException: Access to the path \"/Library/Fonts/VBVESREG.otf\" is denied.",
    "2024-07-13 13:35:31 +02 - [Warning-Duplicati.Library.Main.Operation.Backup.MetadataGenerator.Metadata-MetadataProcessFailed]: Failed to process metadata for \"/Library/Fonts/Glober Bold Free.otf\", storing empty metadata\nFileAccesException: Unable to access the file \"/Library/Fonts/Glober Bold Free.otf\" with method listxattr, error: EACCES (13)",
    "2024-07-13 13:35:31 +02 - [Warning-Duplicati.Library.Main.Operation.Backup.FileBlockProcessor.FileEntry-PathProcessingFailed]: Failed to process path: /Library/Fonts/Glober Bold Free.otf\nUnauthorizedAccessException: Access to the path \"/Library/Fonts/Glober Bold Free.otf\" is denied."
  ],
  "Errors": [
    "2024-07-14 00:21:08 +02 - [Error-Duplicati.Library.Main.Operation.BackupHandler-FatalError]: Fatal error\nWebException: Error: NameResolutionFailure",
    "2024-07-14 00:21:09 +02 - [Error-Duplicati.Library.Main.Controller-FailedOperation]: The operation Backup has failed with error: One or more errors occurred. (Error: NameResolutionFailure (Error: NameResolutionFailure) (One or more errors occurred. (Error: NameResolutionFailure)))\nAggregateException: One or more errors occurred. (Error: NameResolutionFailure (Error: NameResolutionFailure) (One or more errors occurred. (Error: NameResolutionFailure)))"
  ],
  "BackendStatistics": {
    "RemoteCalls": 7176,
    "BytesUploaded": 187916948656,
    "BytesDownloaded": 0,
    "FilesUploaded": 7168,
    "FilesDownloaded": 0,
    "FilesDeleted": 0,
    "FoldersCreated": 0,
    "RetryAttempts": 6,
    "UnknownFileSize": 1474828,
    "UnknownFileCount": 1,
    "KnownFileCount": 15167,
    "KnownFileSize": 397550488787,
    "LastBackupDate": "0001-01-01T00:00:00",
    "BackupListCount": 3,
    "TotalQuotaSpace": 0,
    "FreeQuotaSpace": 0,
    "AssignedQuotaSpace": -1,
    "ReportedQuotaError": false,
    "ReportedQuotaWarning": false,
    "MainOperation": "Backup",
    "ParsedResult": "Success",
    "Interrupted": false,
    "Version": "2.0.8.1 (2.0.8.1_beta_2024-05-07)",
    "EndTime": "0001-01-01T00:00:00",
    "BeginTime": "2024-07-13T11:32:22.623849Z",
    "Duration": "00:00:00",
    "MessagesActualLength": 0,
    "WarningsActualLength": 0,
    "ErrorsActualLength": 0,
    "Messages": null,
    "Warnings": null,
    "Errors": null
  }
}
        

Welcome to the forum @TapeTV

At least this generic network error is a little more specific than the first one.

Enter DNS and search domain settings on Mac at Apple explains domain name resolution.
The Best Free and Public DNS Servers (2024) (and probably many more) suggest servers.

Duplicati uses the names you typed into the configuration, and possibly ones returned from TransIP, depending on how the OpenStack Swift protocol works. I don’t have that, or a Mac.

is retries on some Duplicati operation such as a put upload that failed. You can raise that in number-of-retries, however you might have something wrong in your networking equipment.

Restarting everything may help. What did you do to get the 187916948656 bytes uploaded? Original post got 0 BytesUploaded. For either of these, check About → Show log → Stored. Possibly there is a stack trace showing the path to the network error (and not just the error).

For fast and repeatable failures, About → Show log → Live can watch them. Click on errors.
Ones that are rare might be easier to catch in a log-file=<path> to get the warnings or errors. Additionally setting log-file-log-level to something like retry will grab more but will be larger.

There are also test tools such as Duplicati.CommandLine.BackendTester.exe which you can exercise your file transfers with, but such a slow failure may be hard to notice in all the noise.

Thanks. This is all a bit above my grade, but I have reset my modem and connected hardware and will try again to see if this changes anything and report back. Like said: it has worked for months with the same settings, except for the change in the Smart Retention-strategy.
FWIW, this is the Stored Log from the last failed backup, mentioned earlier:

System.AggregateException: One or more errors occurred. (Error: NameResolutionFailure (Error: NameResolutionFailure) (One or more errors occurred. (Error: NameResolutionFailure))) ---> System.AggregateException: Error: NameResolutionFailure (Error: NameResolutionFailure) (One or more errors occurred. (Error: NameResolutionFailure)) ---> System.Net.WebException: Error: NameResolutionFailure
  at System.Net.WebConnection.Connect (System.Net.WebOperation operation, System.Threading.CancellationToken cancellationToken) [0x00044] in <08ae0f58f1a64ab589e0427c6509d74e>:0 
  at System.Net.WebConnection.InitConnection (System.Net.WebOperation operation, System.Threading.CancellationToken cancellationToken) [0x000cc] in <08ae0f58f1a64ab589e0427c6509d74e>:0 
  at System.Net.WebOperation.Run () [0x0009a] in <08ae0f58f1a64ab589e0427c6509d74e>:0 
  at System.Net.WebCompletionSource`1[T].WaitForCompletion () [0x00094] in <08ae0f58f1a64ab589e0427c6509d74e>:0 
  at System.Net.HttpWebRequest.RunWithTimeoutWorker[T] (System.Threading.Tasks.Task`1[TResult] workerTask, System.Int32 timeout, System.Action abort, System.Func`1[TResult] aborted, System.Threading.CancellationTokenSource cts) [0x000f8] in <08ae0f58f1a64ab589e0427c6509d74e>:0 
  at Duplicati.Library.Utility.AsyncHttpRequest+AsyncWrapper.GetResponseOrStream () [0x0004d] in <7c449986c8214d25b9b3a26e6f89ea58>:0 
  at Duplicati.Library.Utility.AsyncHttpRequest.GetRequestStream (System.Int64 contentlength) [0x00068] in <7c449986c8214d25b9b3a26e6f89ea58>:0 
  at Duplicati.Library.Backend.WEBDAV.PutAsync (System.String remotename, System.IO.Stream stream, System.Threading.CancellationToken cancelToken) [0x001b8] in <ad8f9780eda242f9a71b24561eea5a5d>:0 
  at Duplicati.Library.Main.Operation.Backup.BackendUploader.DoPut (Duplicati.Library.Main.Operation.Common.BackendHandler+FileEntryItem item, Duplicati.Library.Interface.IBackend backend, System.Threading.CancellationToken cancelToken) [0x00426] in <9b99db820df3422db0aa96d4648dc7b1>:0 
  at Duplicati.Library.Main.Operation.Backup.BackendUploader+<>c__DisplayClass20_0.<UploadFileAsync>b__0 () [0x0010a] in <9b99db820df3422db0aa96d4648dc7b1>:0 
  at Duplicati.Library.Main.Operation.Backup.BackendUploader.DoWithRetry (System.Func`1[TResult] method, Duplicati.Library.Main.Operation.Common.BackendHandler+FileEntryItem item, Duplicati.Library.Main.Operation.Backup.BackendUploader+Worker worker, System.Threading.CancellationToken cancelToken) [0x00198] in <9b99db820df3422db0aa96d4648dc7b1>:0 
  at Duplicati.Library.Main.Operation.Backup.BackendUploader.DoWithRetry (System.Func`1[TResult] method, Duplicati.Library.Main.Operation.Common.BackendHandler+FileEntryItem item, Duplicati.Library.Main.Operation.Backup.BackendUploader+Worker worker, System.Threading.CancellationToken cancelToken) [0x003c1] in <9b99db820df3422db0aa96d4648dc7b1>:0 
  at Duplicati.Library.Main.Operation.Backup.BackendUploader.UploadFileAsync (Duplicati.Library.Main.Operation.Common.BackendHandler+FileEntryItem item, Duplicati.Library.Main.Operation.Backup.BackendUploader+Worker worker, System.Threading.CancellationToken cancelToken) [0x000da] in <9b99db820df3422db0aa96d4648dc7b1>:0 
  at Duplicati.Library.Main.Operation.Backup.BackendUploader.UploadBlockAndIndexAsync (Duplicati.Library.Main.Operation.Backup.VolumeUploadRequest upload, Duplicati.Library.Main.Operation.Backup.BackendUploader+Worker worker, System.Threading.CancellationToken cancelToken) [0x00098] in <9b99db820df3422db0aa96d4648dc7b1>:0 
  at Duplicati.Library.Main.Operation.Backup.BackendUploader.<Run>b__13_0 (<>f__AnonymousType12`1[<Input>j__TPar] self) [0x00780] in <9b99db820df3422db0aa96d4648dc7b1>:0 
  at Duplicati.Library.Main.Operation.Backup.BackendUploader.<Run>b__13_0 (<>f__AnonymousType12`1[<Input>j__TPar] self) [0x007d7] in <9b99db820df3422db0aa96d4648dc7b1>:0 
  at CoCoL.AutomationExtensions.RunTask[T] (T channels, System.Func`2[T,TResult] method, System.Boolean catchRetiredExceptions) [0x000d5] in <9a758ff4db6c48d6b3d4d0e5c2adf6d1>:0 
  at Duplicati.Library.Main.Operation.BackupHandler.FlushBackend (Duplicati.Library.Main.BackupResults result, CoCoL.IWriteChannel`1[T] uploadtarget, System.Threading.Tasks.Task uploader) [0x00253] in <9b99db820df3422db0aa96d4648dc7b1>:0 
  at Duplicati.Library.Main.Operation.BackupHandler.RunAsync (System.String[] sources, Duplicati.Library.Utility.IFilter filter, System.Threading.CancellationToken token) [0x00cb2] in <9b99db820df3422db0aa96d4648dc7b1>:0 
   --- End of inner exception stack trace ---
  at Duplicati.Library.Main.Operation.BackupHandler.RunAsync (System.String[] sources, Duplicati.Library.Utility.IFilter filter, System.Threading.CancellationToken token) [0x01048] in <9b99db820df3422db0aa96d4648dc7b1>:0 
   --- End of inner exception stack trace ---
  at CoCoL.ChannelExtensions.WaitForTaskOrThrow (System.Threading.Tasks.Task task) [0x0005d] in <9a758ff4db6c48d6b3d4d0e5c2adf6d1>:0 
  at Duplicati.Library.Main.Operation.BackupHandler.Run (System.String[] sources, Duplicati.Library.Utility.IFilter filter, System.Threading.CancellationToken token) [0x00009] in <9b99db820df3422db0aa96d4648dc7b1>:0 
  at Duplicati.Library.Main.Controller+<>c__DisplayClass14_0.<Backup>b__0 (Duplicati.Library.Main.BackupResults result) [0x0004b] in <9b99db820df3422db0aa96d4648dc7b1>:0 
  at Duplicati.Library.Main.Controller.RunAction[T] (T result, System.String[]& paths, Duplicati.Library.Utility.IFilter& filter, System.Action`1[T] method) [0x0036c] in <9b99db820df3422db0aa96d4648dc7b1>:0 
  at Duplicati.Library.Main.Controller.Backup (System.String[] inputsources, Duplicati.Library.Utility.IFilter filter) [0x00074] in <9b99db820df3422db0aa96d4648dc7b1>:0 
  at Duplicati.Server.Runner.Run (Duplicati.Server.Runner+IRunnerData data, System.Boolean fromQueue) [0x00349] in <17916a3bd21d425da6aeece2c5428e16>:0 
---> (Inner Exception #0) System.AggregateException: Error: NameResolutionFailure (Error: NameResolutionFailure) (One or more errors occurred. (Error: NameResolutionFailure)) ---> System.Net.WebException: Error: NameResolutionFailure
  at System.Net.WebConnection.Connect (System.Net.WebOperation operation, System.Threading.CancellationToken cancellationToken) [0x00044] in <08ae0f58f1a64ab589e0427c6509d74e>:0 
  at System.Net.WebConnection.InitConnection (System.Net.WebOperation operation, System.Threading.CancellationToken cancellationToken) [0x000cc] in <08ae0f58f1a64ab589e0427c6509d74e>:0 
  at System.Net.WebOperation.Run () [0x0009a] in <08ae0f58f1a64ab589e0427c6509d74e>:0 
  at System.Net.WebCompletionSource`1[T].WaitForCompletion () [0x00094] in <08ae0f58f1a64ab589e0427c6509d74e>:0 
  at System.Net.HttpWebRequest.RunWithTimeoutWorker[T] (System.Threading.Tasks.Task`1[TResult] workerTask, System.Int32 timeout, System.Action abort, System.Func`1[TResult] aborted, System.Threading.CancellationTokenSource cts) [0x000f8] in <08ae0f58f1a64ab589e0427c6509d74e>:0 
  at Duplicati.Library.Utility.AsyncHttpRequest+AsyncWrapper.GetResponseOrStream () [0x0004d] in <7c449986c8214d25b9b3a26e6f89ea58>:0 
  at Duplicati.Library.Utility.AsyncHttpRequest.GetRequestStream (System.Int64 contentlength) [0x00068] in <7c449986c8214d25b9b3a26e6f89ea58>:0 
  at Duplicati.Library.Backend.WEBDAV.PutAsync (System.String remotename, System.IO.Stream stream, System.Threading.CancellationToken cancelToken) [0x001b8] in <ad8f9780eda242f9a71b24561eea5a5d>:0 
  at Duplicati.Library.Main.Operation.Backup.BackendUploader.DoPut (Duplicati.Library.Main.Operation.Common.BackendHandler+FileEntryItem item, Duplicati.Library.Interface.IBackend backend, System.Threading.CancellationToken cancelToken) [0x00426] in <9b99db820df3422db0aa96d4648dc7b1>:0 
  at Duplicati.Library.Main.Operation.Backup.BackendUploader+<>c__DisplayClass20_0.<UploadFileAsync>b__0 () [0x0010a] in <9b99db820df3422db0aa96d4648dc7b1>:0 
  at Duplicati.Library.Main.Operation.Backup.BackendUploader.DoWithRetry (System.Func`1[TResult] method, Duplicati.Library.Main.Operation.Common.BackendHandler+FileEntryItem item, Duplicati.Library.Main.Operation.Backup.BackendUploader+Worker worker, System.Threading.CancellationToken cancelToken) [0x00198] in <9b99db820df3422db0aa96d4648dc7b1>:0 
  at Duplicati.Library.Main.Operation.Backup.BackendUploader.DoWithRetry (System.Func`1[TResult] method, Duplicati.Library.Main.Operation.Common.BackendHandler+FileEntryItem item, Duplicati.Library.Main.Operation.Backup.BackendUploader+Worker worker, System.Threading.CancellationToken cancelToken) [0x003c1] in <9b99db820df3422db0aa96d4648dc7b1>:0 
  at Duplicati.Library.Main.Operation.Backup.BackendUploader.UploadFileAsync (Duplicati.Library.Main.Operation.Common.BackendHandler+FileEntryItem item, Duplicati.Library.Main.Operation.Backup.BackendUploader+Worker worker, System.Threading.CancellationToken cancelToken) [0x000da] in <9b99db820df3422db0aa96d4648dc7b1>:0 
  at Duplicati.Library.Main.Operation.Backup.BackendUploader.UploadBlockAndIndexAsync (Duplicati.Library.Main.Operation.Backup.VolumeUploadRequest upload, Duplicati.Library.Main.Operation.Backup.BackendUploader+Worker worker, System.Threading.CancellationToken cancelToken) [0x00098] in <9b99db820df3422db0aa96d4648dc7b1>:0 
  at Duplicati.Library.Main.Operation.Backup.BackendUploader.<Run>b__13_0 (<>f__AnonymousType12`1[<Input>j__TPar] self) [0x00780] in <9b99db820df3422db0aa96d4648dc7b1>:0 
  at Duplicati.Library.Main.Operation.Backup.BackendUploader.<Run>b__13_0 (<>f__AnonymousType12`1[<Input>j__TPar] self) [0x007d7] in <9b99db820df3422db0aa96d4648dc7b1>:0 
  at CoCoL.AutomationExtensions.RunTask[T] (T channels, System.Func`2[T,TResult] method, System.Boolean catchRetiredExceptions) [0x000d5] in <9a758ff4db6c48d6b3d4d0e5c2adf6d1>:0 
  at Duplicati.Library.Main.Operation.BackupHandler.FlushBackend (Duplicati.Library.Main.BackupResults result, CoCoL.IWriteChannel`1[T] uploadtarget, System.Threading.Tasks.Task uploader) [0x00253] in <9b99db820df3422db0aa96d4648dc7b1>:0 
  at Duplicati.Library.Main.Operation.BackupHandler.RunAsync (System.String[] sources, Duplicati.Library.Utility.IFilter filter, System.Threading.CancellationToken token) [0x00cb2] in <9b99db820df3422db0aa96d4648dc7b1>:0 
   --- End of inner exception stack trace ---
  at Duplicati.Library.Main.Operation.BackupHandler.RunAsync (System.String[] sources, Duplicati.Library.Utility.IFilter filter, System.Threading.CancellationToken token) [0x01048] in <9b99db820df3422db0aa96d4648dc7b1>:0 
---> (Inner Exception #0) System.Net.WebException: Error: NameResolutionFailure
  at System.Net.WebConnection.Connect (System.Net.WebOperation operation, System.Threading.CancellationToken cancellationToken) [0x00044] in <08ae0f58f1a64ab589e0427c6509d74e>:0 
  at System.Net.WebConnection.InitConnection (System.Net.WebOperation operation, System.Threading.CancellationToken cancellationToken) [0x000cc] in <08ae0f58f1a64ab589e0427c6509d74e>:0 
  at System.Net.WebOperation.Run () [0x0009a] in <08ae0f58f1a64ab589e0427c6509d74e>:0 
  at System.Net.WebCompletionSource`1[T].WaitForCompletion () [0x00094] in <08ae0f58f1a64ab589e0427c6509d74e>:0 
  at System.Net.HttpWebRequest.RunWithTimeoutWorker[T] (System.Threading.Tasks.Task`1[TResult] workerTask, System.Int32 timeout, System.Action abort, System.Func`1[TResult] aborted, System.Threading.CancellationTokenSource cts) [0x000f8] in <08ae0f58f1a64ab589e0427c6509d74e>:0 
  at Duplicati.Library.Utility.AsyncHttpRequest+AsyncWrapper.GetResponseOrStream () [0x0004d] in <7c449986c8214d25b9b3a26e6f89ea58>:0 
  at Duplicati.Library.Utility.AsyncHttpRequest.GetRequestStream (System.Int64 contentlength) [0x00068] in <7c449986c8214d25b9b3a26e6f89ea58>:0 
  at Duplicati.Library.Backend.WEBDAV.PutAsync (System.String remotename, System.IO.Stream stream, System.Threading.CancellationToken cancelToken) [0x001b8] in <ad8f9780eda242f9a71b24561eea5a5d>:0 
  at Duplicati.Library.Main.Operation.Backup.BackendUploader.DoPut (Duplicati.Library.Main.Operation.Common.BackendHandler+FileEntryItem item, Duplicati.Library.Interface.IBackend backend, System.Threading.CancellationToken cancelToken) [0x00426] in <9b99db820df3422db0aa96d4648dc7b1>:0 
  at Duplicati.Library.Main.Operation.Backup.BackendUploader+<>c__DisplayClass20_0.<UploadFileAsync>b__0 () [0x0010a] in <9b99db820df3422db0aa96d4648dc7b1>:0 
  at Duplicati.Library.Main.Operation.Backup.BackendUploader.DoWithRetry (System.Func`1[TResult] method, Duplicati.Library.Main.Operation.Common.BackendHandler+FileEntryItem item, Duplicati.Library.Main.Operation.Backup.BackendUploader+Worker worker, System.Threading.CancellationToken cancelToken) [0x00198] in <9b99db820df3422db0aa96d4648dc7b1>:0 
  at Duplicati.Library.Main.Operation.Backup.BackendUploader.DoWithRetry (System.Func`1[TResult] method, Duplicati.Library.Main.Operation.Common.BackendHandler+FileEntryItem item, Duplicati.Library.Main.Operation.Backup.BackendUploader+Worker worker, System.Threading.CancellationToken cancelToken) [0x003c1] in <9b99db820df3422db0aa96d4648dc7b1>:0 
  at Duplicati.Library.Main.Operation.Backup.BackendUploader.UploadFileAsync (Duplicati.Library.Main.Operation.Common.BackendHandler+FileEntryItem item, Duplicati.Library.Main.Operation.Backup.BackendUploader+Worker worker, System.Threading.CancellationToken cancelToken) [0x000da] in <9b99db820df3422db0aa96d4648dc7b1>:0 
  at Duplicati.Library.Main.Operation.Backup.BackendUploader.UploadBlockAndIndexAsync (Duplicati.Library.Main.Operation.Backup.VolumeUploadRequest upload, Duplicati.Library.Main.Operation.Backup.BackendUploader+Worker worker, System.Threading.CancellationToken cancelToken) [0x00098] in <9b99db820df3422db0aa96d4648dc7b1>:0 
  at Duplicati.Library.Main.Operation.Backup.BackendUploader.<Run>b__13_0 (<>f__AnonymousType12`1[<Input>j__TPar] self) [0x00780] in <9b99db820df3422db0aa96d4648dc7b1>:0 
  at Duplicati.Library.Main.Operation.Backup.BackendUploader.<Run>b__13_0 (<>f__AnonymousType12`1[<Input>j__TPar] self) [0x007d7] in <9b99db820df3422db0aa96d4648dc7b1>:0 
  at CoCoL.AutomationExtensions.RunTask[T] (T channels, System.Func`2[T,TResult] method, System.Boolean catchRetiredExceptions) [0x000d5] in <9a758ff4db6c48d6b3d4d0e5c2adf6d1>:0 
  at Duplicati.Library.Main.Operation.BackupHandler.FlushBackend (Duplicati.Library.Main.BackupResults result, CoCoL.IWriteChannel`1[T] uploadtarget, System.Threading.Tasks.Task uploader) [0x00253] in <9b99db820df3422db0aa96d4648dc7b1>:0 
  at Duplicati.Library.Main.Operation.BackupHandler.RunAsync (System.String[] sources, Duplicati.Library.Utility.IFilter filter, System.Threading.CancellationToken token) [0x00cb2] in <9b99db820df3422db0aa96d4648dc7b1>:0 <---

---> (Inner Exception #1) System.AggregateException: One or more errors occurred. (Error: NameResolutionFailure) ---> System.Net.WebException: Error: NameResolutionFailure
  at System.Net.WebConnection.Connect (System.Net.WebOperation operation, System.Threading.CancellationToken cancellationToken) [0x00044] in <08ae0f58f1a64ab589e0427c6509d74e>:0 
  at System.Net.WebConnection.InitConnection (System.Net.WebOperation operation, System.Threading.CancellationToken cancellationToken) [0x000cc] in <08ae0f58f1a64ab589e0427c6509d74e>:0 
  at System.Net.WebOperation.Run () [0x0009a] in <08ae0f58f1a64ab589e0427c6509d74e>:0 
  at System.Net.WebCompletionSource`1[T].WaitForCompletion () [0x00094] in <08ae0f58f1a64ab589e0427c6509d74e>:0 
  at System.Net.HttpWebRequest.RunWithTimeoutWorker[T] (System.Threading.Tasks.Task`1[TResult] workerTask, System.Int32 timeout, System.Action abort, System.Func`1[TResult] aborted, System.Threading.CancellationTokenSource cts) [0x000f8] in <08ae0f58f1a64ab589e0427c6509d74e>:0 
  at Duplicati.Library.Utility.AsyncHttpRequest+AsyncWrapper.GetResponseOrStream () [0x0004d] in <7c449986c8214d25b9b3a26e6f89ea58>:0 
  at Duplicati.Library.Utility.AsyncHttpRequest.GetRequestStream (System.Int64 contentlength) [0x00068] in <7c449986c8214d25b9b3a26e6f89ea58>:0 
  at Duplicati.Library.Backend.WEBDAV.PutAsync (System.String remotename, System.IO.Stream stream, System.Threading.CancellationToken cancelToken) [0x001b8] in <ad8f9780eda242f9a71b24561eea5a5d>:0 
  at Duplicati.Library.Main.Operation.Backup.BackendUploader.DoPut (Duplicati.Library.Main.Operation.Common.BackendHandler+FileEntryItem item, Duplicati.Library.Interface.IBackend backend, System.Threading.CancellationToken cancelToken) [0x00426] in <9b99db820df3422db0aa96d4648dc7b1>:0 
  at Duplicati.Library.Main.Operation.Backup.BackendUploader+<>c__DisplayClass20_0.<UploadFileAsync>b__0 () [0x0010a] in <9b99db820df3422db0aa96d4648dc7b1>:0 
  at Duplicati.Library.Main.Operation.Backup.BackendUploader.DoWithRetry (System.Func`1[TResult] method, Duplicati.Library.Main.Operation.Common.BackendHandler+FileEntryItem item, Duplicati.Library.Main.Operation.Backup.BackendUploader+Worker worker, System.Threading.CancellationToken cancelToken) [0x00198] in <9b99db820df3422db0aa96d4648dc7b1>:0 
  at Duplicati.Library.Main.Operation.Backup.BackendUploader.DoWithRetry (System.Func`1[TResult] method, Duplicati.Library.Main.Operation.Common.BackendHandler+FileEntryItem item, Duplicati.Library.Main.Operation.Backup.BackendUploader+Worker worker, System.Threading.CancellationToken cancelToken) [0x003c1] in <9b99db820df3422db0aa96d4648dc7b1>:0 
  at Duplicati.Library.Main.Operation.Backup.BackendUploader.UploadFileAsync (Duplicati.Library.Main.Operation.Common.BackendHandler+FileEntryItem item, Duplicati.Library.Main.Operation.Backup.BackendUploader+Worker worker, System.Threading.CancellationToken cancelToken) [0x000da] in <9b99db820df3422db0aa96d4648dc7b1>:0 
  at Duplicati.Library.Main.Operation.Backup.BackendUploader.UploadBlockAndIndexAsync (Duplicati.Library.Main.Operation.Backup.VolumeUploadRequest upload, Duplicati.Library.Main.Operation.Backup.BackendUploader+Worker worker, System.Threading.CancellationToken cancelToken) [0x00098] in <9b99db820df3422db0aa96d4648dc7b1>:0 
  at Duplicati.Library.Main.Operation.Backup.BackendUploader.<Run>b__13_0 (<>f__AnonymousType12`1[<Input>j__TPar] self) [0x00780] in <9b99db820df3422db0aa96d4648dc7b1>:0 
  at Duplicati.Library.Main.Operation.Backup.BackendUploader.<Run>b__13_0 (<>f__AnonymousType12`1[<Input>j__TPar] self) [0x007d7] in <9b99db820df3422db0aa96d4648dc7b1>:0 
  at CoCoL.AutomationExtensions.RunTask[T] (T channels, System.Func`2[T,TResult] method, System.Boolean catchRetiredExceptions) [0x000d5] in <9a758ff4db6c48d6b3d4d0e5c2adf6d1>:0 
  at Duplicati.Library.Main.Operation.BackupHandler.FlushBackend (Duplicati.Library.Main.BackupResults result, CoCoL.IWriteChannel`1[T] uploadtarget, System.Threading.Tasks.Task uploader) [0x00253] in <9b99db820df3422db0aa96d4648dc7b1>:0 
  at Duplicati.Library.Main.Operation.BackupHandler.RunAsync (System.String[] sources, Duplicati.Library.Utility.IFilter filter, System.Threading.CancellationToken token) [0x00cb2] in <9b99db820df3422db0aa96d4648dc7b1>:0 
   --- End of inner exception stack trace ---
---> (Inner Exception #0) System.Net.WebException: Error: NameResolutionFailure
  at System.Net.WebConnection.Connect (System.Net.WebOperation operation, System.Threading.CancellationToken cancellationToken) [0x00044] in <08ae0f58f1a64ab589e0427c6509d74e>:0 
  at System.Net.WebConnection.InitConnection (System.Net.WebOperation operation, System.Threading.CancellationToken cancellationToken) [0x000cc] in <08ae0f58f1a64ab589e0427c6509d74e>:0 
  at System.Net.WebOperation.Run () [0x0009a] in <08ae0f58f1a64ab589e0427c6509d74e>:0 
  at System.Net.WebCompletionSource`1[T].WaitForCompletion () [0x00094] in <08ae0f58f1a64ab589e0427c6509d74e>:0 
  at System.Net.HttpWebRequest.RunWithTimeoutWorker[T] (System.Threading.Tasks.Task`1[TResult] workerTask, System.Int32 timeout, System.Action abort, System.Func`1[TResult] aborted, System.Threading.CancellationTokenSource cts) [0x000f8] in <08ae0f58f1a64ab589e0427c6509d74e>:0 
  at Duplicati.Library.Utility.AsyncHttpRequest+AsyncWrapper.GetResponseOrStream () [0x0004d] in <7c449986c8214d25b9b3a26e6f89ea58>:0 
  at Duplicati.Library.Utility.AsyncHttpRequest.GetRequestStream (System.Int64 contentlength) [0x00068] in <7c449986c8214d25b9b3a26e6f89ea58>:0 
  at Duplicati.Library.Backend.WEBDAV.PutAsync (System.String remotename, System.IO.Stream stream, System.Threading.CancellationToken cancelToken) [0x001b8] in <ad8f9780eda242f9a71b24561eea5a5d>:0 
  at Duplicati.Library.Main.Operation.Backup.BackendUploader.DoPut (Duplicati.Library.Main.Operation.Common.BackendHandler+FileEntryItem item, Duplicati.Library.Interface.IBackend backend, System.Threading.CancellationToken cancelToken) [0x00426] in <9b99db820df3422db0aa96d4648dc7b1>:0 
  at Duplicati.Library.Main.Operation.Backup.BackendUploader+<>c__DisplayClass20_0.<UploadFileAsync>b__0 () [0x0010a] in <9b99db820df3422db0aa96d4648dc7b1>:0 
  at Duplicati.Library.Main.Operation.Backup.BackendUploader.DoWithRetry (System.Func`1[TResult] method, Duplicati.Library.Main.Operation.Common.BackendHandler+FileEntryItem item, Duplicati.Library.Main.Operation.Backup.BackendUploader+Worker worker, System.Threading.CancellationToken cancelToken) [0x00198] in <9b99db820df3422db0aa96d4648dc7b1>:0 
  at Duplicati.Library.Main.Operation.Backup.BackendUploader.DoWithRetry (System.Func`1[TResult] method, Duplicati.Library.Main.Operation.Common.BackendHandler+FileEntryItem item, Duplicati.Library.Main.Operation.Backup.BackendUploader+Worker worker, System.Threading.CancellationToken cancelToken) [0x003c1] in <9b99db820df3422db0aa96d4648dc7b1>:0 
  at Duplicati.Library.Main.Operation.Backup.BackendUploader.UploadFileAsync (Duplicati.Library.Main.Operation.Common.BackendHandler+FileEntryItem item, Duplicati.Library.Main.Operation.Backup.BackendUploader+Worker worker, System.Threading.CancellationToken cancelToken) [0x000da] in <9b99db820df3422db0aa96d4648dc7b1>:0 
  at Duplicati.Library.Main.Operation.Backup.BackendUploader.UploadBlockAndIndexAsync (Duplicati.Library.Main.Operation.Backup.VolumeUploadRequest upload, Duplicati.Library.Main.Operation.Backup.BackendUploader+Worker worker, System.Threading.CancellationToken cancelToken) [0x00098] in <9b99db820df3422db0aa96d4648dc7b1>:0 
  at Duplicati.Library.Main.Operation.Backup.BackendUploader.<Run>b__13_0 (<>f__AnonymousType12`1[<Input>j__TPar] self) [0x00780] in <9b99db820df3422db0aa96d4648dc7b1>:0 
  at Duplicati.Library.Main.Operation.Backup.BackendUploader.<Run>b__13_0 (<>f__AnonymousType12`1[<Input>j__TPar] self) [0x007d7] in <9b99db820df3422db0aa96d4648dc7b1>:0 
  at CoCoL.AutomationExtensions.RunTask[T] (T channels, System.Func`2[T,TResult] method, System.Boolean catchRetiredExceptions) [0x000d5] in <9a758ff4db6c48d6b3d4d0e5c2adf6d1>:0 
  at Duplicati.Library.Main.Operation.BackupHandler.FlushBackend (Duplicati.Library.Main.BackupResults result, CoCoL.IWriteChannel`1[T] uploadtarget, System.Threading.Tasks.Task uploader) [0x00253] in <9b99db820df3422db0aa96d4648dc7b1>:0 
  at Duplicati.Library.Main.Operation.BackupHandler.RunAsync (System.String[] sources, Duplicati.Library.Utility.IFilter filter, System.Threading.CancellationToken token) [0x00cb2] in <9b99db820df3422db0aa96d4648dc7b1>:0 <---
<---
<---

After the reset, all went fine:


So clearly my setup was not ok in the end.
Some warnings though:

            {
  "DeletedFiles": 17025,
  "DeletedFolders": 2185,
  "ModifiedFiles": 3118,
  "ExaminedFiles": 465418,
  "OpenedFiles": 10761,
  "AddedFiles": 7643,
  "SizeOfModifiedFiles": 15077881642,
  "SizeOfAddedFiles": 84116670136,
  "SizeOfExaminedFiles": 793303752634,
  "SizeOfOpenedFiles": 100725988399,
  "NotProcessedFiles": 0,
  "AddedFolders": 1119,
  "TooLargeFiles": 0,
  "FilesWithError": 0,
  "ModifiedFolders": 0,
  "ModifiedSymlinks": 0,
  "AddedSymlinks": 14,
  "DeletedSymlinks": 48,
  "PartialBackup": false,
  "Dryrun": false,
  "MainOperation": "Backup",
  "CompactResults": null,
  "VacuumResults": null,
  "DeleteResults": {
    "DeletedSetsActualLength": 0,
    "DeletedSets": [],
    "Dryrun": false,
    "MainOperation": "Delete",
    "CompactResults": null,
    "ParsedResult": "Success",
    "Interrupted": false,
    "Version": "2.0.8.1 (2.0.8.1_beta_2024-05-07)",
    "EndTime": "2024-07-15T18:09:33.105718Z",
    "BeginTime": "2024-07-15T18:04:23.94823Z",
    "Duration": "00:05:09.1574880",
    "MessagesActualLength": 0,
    "WarningsActualLength": 0,
    "ErrorsActualLength": 0,
    "Messages": null,
    "Warnings": null,
    "Errors": null,
    "BackendStatistics": {
      "RemoteCalls": 1655,
      "BytesUploaded": 43215388733,
      "BytesDownloaded": 91822343,
      "FilesUploaded": 1649,
      "FilesDownloaded": 3,
      "FilesDeleted": 0,
      "FoldersCreated": 0,
      "RetryAttempts": 1,
      "UnknownFileSize": 1474828,
      "UnknownFileCount": 1,
      "KnownFileCount": 25060,
      "KnownFileSize": 656899155300,
      "LastBackupDate": "2024-07-15T17:33:18+02:00",
      "BackupListCount": 3,
      "TotalQuotaSpace": 0,
      "FreeQuotaSpace": 0,
      "AssignedQuotaSpace": -1,
      "ReportedQuotaError": false,
      "ReportedQuotaWarning": false,
      "MainOperation": "Backup",
      "ParsedResult": "Success",
      "Interrupted": false,
      "Version": "2.0.8.1 (2.0.8.1_beta_2024-05-07)",
      "EndTime": "0001-01-01T00:00:00",
      "BeginTime": "2024-07-15T15:33:17.456537Z",
      "Duration": "00:00:00",
      "MessagesActualLength": 0,
      "WarningsActualLength": 0,
      "ErrorsActualLength": 0,
      "Messages": null,
      "Warnings": null,
      "Errors": null
    }
  },
  "RepairResults": null,
  "TestResults": {
    "MainOperation": "Test",
    "VerificationsActualLength": 3,
    "Verifications": [
      {
        "Key": "duplicati-20240713T113224Z.dlist.zip.aes",
        "Value": []
      },
      {
        "Key": "duplicati-ie2506e36596b4e9ea5896be8eab014df.dindex.zip.aes",
        "Value": []
      },
      {
        "Key": "duplicati-b5607d9defd4849e898e454a19c612059.dblock.zip.aes",
        "Value": []
      }
    ],
    "ParsedResult": "Success",
    "Interrupted": false,
    "Version": "2.0.8.1 (2.0.8.1_beta_2024-05-07)",
    "EndTime": "2024-07-15T18:10:10.690615Z",
    "BeginTime": "2024-07-15T18:09:55.519668Z",
    "Duration": "00:00:15.1709470",
    "MessagesActualLength": 0,
    "WarningsActualLength": 0,
    "ErrorsActualLength": 0,
    "Messages": null,
    "Warnings": null,
    "Errors": null,
    "BackendStatistics": {
      "RemoteCalls": 1655,
      "BytesUploaded": 43215388733,
      "BytesDownloaded": 91822343,
      "FilesUploaded": 1649,
      "FilesDownloaded": 3,
      "FilesDeleted": 0,
      "FoldersCreated": 0,
      "RetryAttempts": 1,
      "UnknownFileSize": 1474828,
      "UnknownFileCount": 1,
      "KnownFileCount": 25060,
      "KnownFileSize": 656899155300,
      "LastBackupDate": "2024-07-15T17:33:18+02:00",
      "BackupListCount": 3,
      "TotalQuotaSpace": 0,
      "FreeQuotaSpace": 0,
      "AssignedQuotaSpace": -1,
      "ReportedQuotaError": false,
      "ReportedQuotaWarning": false,
      "MainOperation": "Backup",
      "ParsedResult": "Success",
      "Interrupted": false,
      "Version": "2.0.8.1 (2.0.8.1_beta_2024-05-07)",
      "EndTime": "0001-01-01T00:00:00",
      "BeginTime": "2024-07-15T15:33:17.456537Z",
      "Duration": "00:00:00",
      "MessagesActualLength": 0,
      "WarningsActualLength": 0,
      "ErrorsActualLength": 0,
      "Messages": null,
      "Warnings": null,
      "Errors": null
    }
  },
  "ParsedResult": "Warning",
  "Interrupted": false,
  "Version": "2.0.8.1 (2.0.8.1_beta_2024-05-07)",
  "EndTime": "2024-07-15T18:10:10.772629Z",
  "BeginTime": "2024-07-15T15:33:17.453513Z",
  "Duration": "02:36:53.3191160",
  "MessagesActualLength": 3318,
  "WarningsActualLength": 900,
  "ErrorsActualLength": 0,
  "Messages": [
    "2024-07-15 17:33:18 +02 - [Information-GetGpgProgramPath-gpg]: gpg",
    "2024-07-15 17:33:18 +02 - [Information-Duplicati.Library.Main.Controller-StartingOperation]: The operation Backup has started",
    "2024-07-15 17:35:11 +02 - [Information-Duplicati.Library.Main.BasicResults-BackendEvent]: Backend event: List - Started:  ()",
    "2024-07-15 17:35:23 +02 - [Information-Duplicati.Library.Main.BasicResults-BackendEvent]: Backend event: List - Completed:  (22.86 KB)",
    "2024-07-15 17:45:50 +02 - [Information-Duplicati.Library.Main.BasicResults-BackendEvent]: Backend event: Put - Started: duplicati-bf7c2597852c24036a5457dc7d751e2be.dblock.zip.aes (49.93 MB)",
    "2024-07-15 17:45:50 +02 - [Information-Duplicati.Library.Main.BasicResults-BackendEvent]: Backend event: Put - Started: duplicati-bfc3a65f934174c61a456af1485e2a864.dblock.zip.aes (49.93 MB)",
    "2024-07-15 17:45:52 +02 - [Information-Duplicati.Library.Main.BasicResults-BackendEvent]: Backend event: Put - Started: duplicati-ba753f6931dea48069e144271df3c8144.dblock.zip.aes (49.97 MB)",
    "2024-07-15 17:45:52 +02 - [Information-Duplicati.Library.Main.BasicResults-BackendEvent]: Backend event: Put - Started: duplicati-b111245cbf5684ff18b015dda877504d7.dblock.zip.aes (49.91 MB)",
    "2024-07-15 17:46:15 +02 - [Information-Duplicati.Library.Main.BasicResults-BackendEvent]: Backend event: Put - Completed: duplicati-bf7c2597852c24036a5457dc7d751e2be.dblock.zip.aes (49.93 MB)",
    "2024-07-15 17:46:15 +02 - [Information-Duplicati.Library.Main.BasicResults-BackendEvent]: Backend event: Put - Started: duplicati-ic330db2586d24f458d977e0405b344b8.dindex.zip.aes (105.31 KB)",
    "2024-07-15 17:46:15 +02 - [Information-Duplicati.Library.Main.BasicResults-BackendEvent]: Backend event: Put - Completed: duplicati-bfc3a65f934174c61a456af1485e2a864.dblock.zip.aes (49.93 MB)",
    "2024-07-15 17:46:16 +02 - [Information-Duplicati.Library.Main.BasicResults-BackendEvent]: Backend event: Put - Started: duplicati-i1ade12cd861c49af99d19025c547ffd7.dindex.zip.aes (66.14 KB)",
    "2024-07-15 17:46:16 +02 - [Information-Duplicati.Library.Main.BasicResults-BackendEvent]: Backend event: Put - Completed: duplicati-b111245cbf5684ff18b015dda877504d7.dblock.zip.aes (49.91 MB)",
    "2024-07-15 17:46:16 +02 - [Information-Duplicati.Library.Main.BasicResults-BackendEvent]: Backend event: Put - Started: duplicati-i53e33491228e486b9683fd014ba187bb.dindex.zip.aes (102.87 KB)",
    "2024-07-15 17:46:16 +02 - [Information-Duplicati.Library.Main.BasicResults-BackendEvent]: Backend event: Put - Completed: duplicati-ic330db2586d24f458d977e0405b344b8.dindex.zip.aes (105.31 KB)",
    "2024-07-15 17:46:16 +02 - [Information-Duplicati.Library.Main.BasicResults-BackendEvent]: Backend event: Put - Started: duplicati-b8db9a87875204c0292e1e228af514b64.dblock.zip.aes (49.92 MB)",
    "2024-07-15 17:46:17 +02 - [Information-Duplicati.Library.Main.BasicResults-BackendEvent]: Backend event: Put - Completed: duplicati-ba753f6931dea48069e144271df3c8144.dblock.zip.aes (49.97 MB)",
    "2024-07-15 17:46:17 +02 - [Information-Duplicati.Library.Main.BasicResults-BackendEvent]: Backend event: Put - Completed: duplicati-i1ade12cd861c49af99d19025c547ffd7.dindex.zip.aes (66.14 KB)",
    "2024-07-15 17:46:17 +02 - [Information-Duplicati.Library.Main.BasicResults-BackendEvent]: Backend event: Put - Started: duplicati-bc7ad05ad897b45f9b66ab2502c0339a3.dblock.zip.aes (49.96 MB)",
    "2024-07-15 17:46:17 +02 - [Information-Duplicati.Library.Main.BasicResults-BackendEvent]: Backend event: Put - Started: duplicati-i4a62c631ae8a469ab6b739945d55c86d.dindex.zip.aes (51.87 KB)"
  ],
  "Warnings": [
    "2024-07-15 17:35:26 +02 - [Warning-Duplicati.Library.Main.Operation.Backup.FileEnumerationProcess-FileAccessError]: Error reported while accessing file: /Library/Caches/com.apple.aned/\nUnauthorizedAccessException: Access to the path '/Library/Caches/com.apple.aned' is denied.",
    "2024-07-15 17:35:26 +02 - [Warning-Duplicati.Library.Main.Operation.Backup.FileEnumerationProcess-PathProcessingError]: Failed to process path: /Library/Caches/com.apple.aned/\nInvalidOperationException: Operation not permitted",
    "2024-07-15 17:35:26 +02 - [Warning-Duplicati.Library.Main.Operation.Backup.FileEnumerationProcess-FileAccessError]: Error reported while accessing file: /Library/Caches/com.apple.iconservices.store/\nUnauthorizedAccessException: Access to the path '/Library/Caches/com.apple.iconservices.store' is denied.",
    "2024-07-15 17:35:26 +02 - [Warning-Duplicati.Library.Main.Operation.Backup.FileEnumerationProcess-FileAccessError]: Error reported while accessing file: /Library/Caches/com.apple.iconservices.store/\nUnauthorizedAccessException: Access to the path '/Library/Caches/com.apple.iconservices.store' is denied.",
    "2024-07-15 17:35:26 +02 - [Warning-Duplicati.Library.Main.Operation.Backup.FileEnumerationProcess-FileAccessError]: Error reported while accessing file: /Library/Caches/Desktop Pictures/858CF8BC-A8F9-4A94-A91E-71FE5B688029/\nUnauthorizedAccessException: Access to the path '/Library/Caches/Desktop Pictures/858CF8BC-A8F9-4A94-A91E-71FE5B688029' is denied.",
    "2024-07-15 17:35:26 +02 - [Warning-Duplicati.Library.Main.Operation.Backup.FileEnumerationProcess-FileAccessError]: Error reported while accessing file: /Library/Caches/Desktop Pictures/858CF8BC-A8F9-4A94-A91E-71FE5B688029/\nUnauthorizedAccessException: Access to the path '/Library/Caches/Desktop Pictures/858CF8BC-A8F9-4A94-A91E-71FE5B688029' is denied.",
    "2024-07-15 17:35:27 +02 - [Warning-Duplicati.Library.Main.Operation.Backup.FileEnumerationProcess-FileAccessError]: Error reported while accessing file: /Library/Caches/com.apple.aned/\nUnauthorizedAccessException: Access to the path '/Library/Caches/com.apple.aned' is denied.",
    "2024-07-15 17:35:27 +02 - [Warning-Duplicati.Library.Main.Operation.Backup.FileEnumerationProcess-PathProcessingError]: Failed to process path: /Library/Caches/com.apple.aned/\nInvalidOperationException: Operation not permitted",
    "2024-07-15 17:35:27 +02 - [Warning-Duplicati.Library.Main.Operation.Backup.FileEnumerationProcess-FileAccessError]: Error reported while accessing file: /Library/Caches/com.apple.iconservices.store/\nUnauthorizedAccessException: Access to the path '/Library/Caches/com.apple.iconservices.store' is denied.",
    "2024-07-15 17:35:27 +02 - [Warning-Duplicati.Library.Main.Operation.Backup.FileEnumerationProcess-FileAccessError]: Error reported while accessing file: /Library/Caches/com.apple.iconservices.store/\nUnauthorizedAccessException: Access to the path '/Library/Caches/com.apple.iconservices.store' is denied.",
    "2024-07-15 17:35:27 +02 - [Warning-Duplicati.Library.Main.Operation.Backup.MetadataGenerator.Metadata-MetadataProcessFailed]: Failed to process metadata for \"/Library/Caches/com.apple.iconservices.store/\", storing empty metadata\nFileAccesException: Unable to access the file \"/Library/Caches/com.apple.iconservices.store\" with method listxattr, error: EACCES (13)",
    "2024-07-15 17:35:27 +02 - [Warning-Duplicati.Library.Main.Operation.Backup.FileEnumerationProcess-FileAccessError]: Error reported while accessing file: /Library/Caches/Desktop Pictures/858CF8BC-A8F9-4A94-A91E-71FE5B688029/\nUnauthorizedAccessException: Access to the path '/Library/Caches/Desktop Pictures/858CF8BC-A8F9-4A94-A91E-71FE5B688029' is denied.",
    "2024-07-15 17:35:27 +02 - [Warning-Duplicati.Library.Main.Operation.Backup.MetadataGenerator.Metadata-MetadataProcessFailed]: Failed to process metadata for \"/Library/Caches/Desktop Pictures/858CF8BC-A8F9-4A94-A91E-71FE5B688029/\", storing empty metadata\nFileAccesException: Unable to access the file \"/Library/Caches/Desktop Pictures/858CF8BC-A8F9-4A94-A91E-71FE5B688029\" with method listxattr, error: EACCES (13)",
    "2024-07-15 17:35:27 +02 - [Warning-Duplicati.Library.Main.Operation.Backup.FileEnumerationProcess-FileAccessError]: Error reported while accessing file: /Library/Caches/Desktop Pictures/858CF8BC-A8F9-4A94-A91E-71FE5B688029/\nUnauthorizedAccessException: Access to the path '/Library/Caches/Desktop Pictures/858CF8BC-A8F9-4A94-A91E-71FE5B688029' is denied.",
    "2024-07-15 17:35:27 +02 - [Warning-Duplicati.Library.Main.Operation.Backup.MetadataGenerator.Metadata-MetadataProcessFailed]: Failed to process metadata for \"/Library/Caches/ColorSync/com.apple.colorsync.devices\", storing empty metadata\nFileAccesException: Unable to access the file \"/Library/Caches/ColorSync/com.apple.colorsync.devices\" with method listxattr, error: EACCES (13)",
    "2024-07-15 17:35:27 +02 - [Warning-Duplicati.Library.Main.Operation.Backup.FileBlockProcessor.FileEntry-PathProcessingFailed]: Failed to process path: /Library/Caches/ColorSync/com.apple.colorsync.devices\nUnauthorizedAccessException: Access to the path \"/Library/Caches/ColorSync/com.apple.colorsync.devices\" is denied.",
    "2024-07-15 17:35:29 +02 - [Warning-Duplicati.Library.Main.Operation.Backup.MetadataGenerator.Metadata-MetadataProcessFailed]: Failed to process metadata for \"/Library/Fonts/VBVESREG.otf\", storing empty metadata\nFileAccesException: Unable to access the file \"/Library/Fonts/VBVESREG.otf\" with method listxattr, error: EACCES (13)",
    "2024-07-15 17:35:29 +02 - [Warning-Duplicati.Library.Main.Operation.Backup.FileBlockProcessor.FileEntry-PathProcessingFailed]: Failed to process path: /Library/Fonts/VBVESREG.otf\nUnauthorizedAccessException: Access to the path \"/Library/Fonts/VBVESREG.otf\" is denied.",
    "2024-07-15 17:35:29 +02 - [Warning-Duplicati.Library.Main.Operation.Backup.MetadataGenerator.Metadata-MetadataProcessFailed]: Failed to process metadata for \"/Library/Fonts/Glober Bold Free.otf\", storing empty metadata\nFileAccesException: Unable to access the file \"/Library/Fonts/Glober Bold Free.otf\" with method listxattr, error: EACCES (13)",
    "2024-07-15 17:35:29 +02 - [Warning-Duplicati.Library.Main.Operation.Backup.FileBlockProcessor.FileEntry-PathProcessingFailed]: Failed to process path: /Library/Fonts/Glober Bold Free.otf\nUnauthorizedAccessException: Access to the path \"/Library/Fonts/Glober Bold Free.otf\" is denied."
  ],
  "Errors": [],
  "BackendStatistics": {
    "RemoteCalls": 1655,
    "BytesUploaded": 43215388733,
    "BytesDownloaded": 91822343,
    "FilesUploaded": 1649,
    "FilesDownloaded": 3,
    "FilesDeleted": 0,
    "FoldersCreated": 0,
    "RetryAttempts": 1,
    "UnknownFileSize": 1474828,
    "UnknownFileCount": 1,
    "KnownFileCount": 25060,
    "KnownFileSize": 656899155300,
    "LastBackupDate": "2024-07-15T17:33:18+02:00",
    "BackupListCount": 3,
    "TotalQuotaSpace": 0,
    "FreeQuotaSpace": 0,
    "AssignedQuotaSpace": -1,
    "ReportedQuotaError": false,
    "ReportedQuotaWarning": false,
    "MainOperation": "Backup",
    "ParsedResult": "Success",
    "Interrupted": false,
    "Version": "2.0.8.1 (2.0.8.1_beta_2024-05-07)",
    "EndTime": "0001-01-01T00:00:00",
    "BeginTime": "2024-07-15T15:33:17.456537Z",
    "Duration": "00:00:00",
    "MessagesActualLength": 0,
    "WarningsActualLength": 0,
    "ErrorsActualLength": 0,
    "Messages": null,
    "Warnings": null,
    "Errors": null
  }
}
        

What user is Duplicati using, for example in About → System info → UserName?

For example, if it’s you, can you access the file? If not, then Duplicati can’t either.

means there might be a lot more inaccessible than the limited sample in the log.

I don’t have or use Mac, but I’d guess running as a service as root can get more.
The tray icon can still be hooked up if you like, with the no-hosted-server option.

About → System info → StartedBy will show you how you started your Duplicati.

Alternatively, if you want just your own files, don’t have it backup what it can’t get.

Getting a full list of inaccessible files might involve writing to a log-file of warnings.

Generally, this indicates that some something has happened so the operating system has closed the connection. It is usually a network error somewhere, but can also be injected by a local process on the system.

Similar, in that it is the DNS that fails, which is often an indication that you are not online, but your machine is connected to the router or local network.

From what I can see these are warnings that specific files cannot be accessed by Duplicati. On MacOS this can happen with general permissions or with privacy protection.

Thanks for all the assist on this. I have reset my complete network and after that was able to do 2 successful backups. For a newbie like me, it’s difficult to grasp these things: speed on the network was superb and all seemed to be functioning, but than still things can go awol under the hood. This is new to me. In the future I shall look to these solutions much sooner.

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