Hello,
when I start Duplicati backup via a script using Windows Task Scheduler, the backup always fails with the following error message:
Checking remote backup ...
Listing remote folder ...
Listing remote folder ...
Listing remote folder ...
Listing remote folder ...
Listing remote folder ...
Listing remote folder ...
The operation Backup has failed => System.Net.Http.HttpRequestException: Response status code does not indicate success: 401 (Unauthorized).
at System.Net.Http.HttpResponseMessage.EnsureSuccessStatusCode()
at Duplicati.Library.Backend.WEBDAV.ListAsync(CancellationToken cancelToken)+MoveNext()
at Duplicati.Library.Backend.WEBDAV.ListAsync(CancellationToken cancelToken)+System.Threading.Tasks.Sources.IValueTaskSource<System.Boolean>.GetResult()
at System.Linq.AsyncEnumerable.<ToListAsync>g__Core|424_0[TSource](IAsyncEnumerable`1 source, CancellationToken cancellationToken) in /_/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/ToList.cs:line 36
at System.Linq.AsyncEnumerable.<ToListAsync>g__Core|424_0[TSource](IAsyncEnumerable`1 source, CancellationToken cancellationToken) in /_/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/ToList.cs:line 36
at Duplicati.Library.Main.Backend.BackendManager.ListOperation.ExecuteAsync(IBackend backend, CancellationToken cancelToken)
at Duplicati.Library.Main.Backend.BackendManager.Handler.Execute[TResult](PendingOperation`1 op, CancellationToken cancellationToken)
at Duplicati.Library.Main.Backend.BackendManager.Handler.Execute(PendingOperationBase op, CancellationToken cancellationToken)
at Duplicati.Library.Main.Backend.BackendManager.Handler.ExecuteWithRetry(PendingOperationBase op, CancellationToken cancellationToken)
at Duplicati.Library.Main.Backend.BackendManager.ListAsync(CancellationToken cancelToken)
at Duplicati.Library.Main.Operation.FilelistProcessor.RemoteListAnalysis(IBackendManager backendManager, Options options, LocalDatabase database, IDbTransaction transaction, IBackendWriter log, IEnumerable`1 protectedFiles, IEnumerable`1 strictExcemptFiles, VerifyMode verifyMode)
at Duplicati.Library.Main.Operation.FilelistProcessor.VerifyRemoteList(IBackendManager backend, Options options, LocalDatabase database, IDbTransaction transaction, IBackendWriter log, IEnumerable`1 protectedFiles, IEnumerable`1 strictExcemptFiles, Boolean logErrors, VerifyMode verifyMode)
at Duplicati.Library.Main.Operation.BackupHandler.PreBackupVerify(Options options, BackupResults result, IBackendManager backendManager)
at Duplicati.Library.Main.Operation.BackupHandler.RunAsync(String[] sources, IBackendManager backendManager, IFilter filter)
at Duplicati.Library.Main.Controller.<>c__DisplayClass22_0.<<Backup>b__0>d.MoveNext()
--- End of stack trace from previous location ---
at Duplicati.Library.Utility.Utility.Await(Task task)
at Duplicati.Library.Main.Controller.RunAction[T](T result, String[]& paths, IFilter& filter, Func`3 method)
The backup destination is definitely reachable. If I start the backup manually using the same command line, the backup completes without errors. Furthermore, the scheduled task is configured to run under the same user account as the manual start. I’m a bit stumped. Does anyone have any idea what might be causing this error?
Michael