# Unknown error No transaction is active on this connection **URL:** \ **Category:** Support\ **Created:** [January 31, 2022, 9:42am UTC](https://forum.duplicati.com/t/unknown-error-no-transaction-is-active-on-this-connection/13842 "2022-01-31T09:42:20Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![Ernest](https://forum.duplicati.com/letter_avatar_proxy/v4/letter/e/c67d28/32.png) [@Ernest](https://forum.duplicati.com/u/Ernest)\ **Post date:** [January 31, 2022, 9:42am UTC](https://forum.duplicati.com/t/unknown-error-no-transaction-is-active-on-this-connection/13842/1 "2022-01-31T09:42:20Z")
Sorry, I am not a computer expert, and I might not describe the problem properly. Please ask if there are further questions. I downloaded Duplicati, defined a procedure, and started to save the data. After some seconds, I received the message “unknown error No transaction is active on this connection”. I use Windows 11. Please assist. Best regards, Ernest ---
**Author:** ![ts678](https://forum.duplicati.com/letter_avatar_proxy/v4/letter/t/8491ac/32.png) [@ts678](https://forum.duplicati.com/u/ts678)\ **Post date:** [February 1, 2022, 5:49pm UTC](https://forum.duplicati.com/t/unknown-error-no-transaction-is-active-on-this-connection/13842/2 "2022-02-01T17:49:05Z")
Welcome to the forum @Ernest > [@Ernest](#): > > defined a procedure On Source screen, where is the data coming from? Can a different small source selection do a backup? On Destination screen, what is the `Storage Type`? Does the `Test connection` button report success? If you changed the Options screen, please say how. > [@Ernest](#): > > started to save the data What’s in destination folder? I wouldn’t expect much after a few seconds. Can you confirm it’s empty? Check the server log at About → Show log → Stored. Any reports there from about the time of failure? After a failure, the `Show log` for the job’s backup usually finds no logs, but you can double-check that… If problem is reproducible, you can watch About → Show log → Live → Verbose for some initial logging. Possibly Profiling level will be needed, but it’s very noisy, so I’m starting at a middle level that’s briefer… ---
**Author:** ![davidtgbe](https://forum.duplicati.com/user_avatar/forum.duplicati.com/davidtgbe/32/3037_2.png) [@davidtgbe](https://forum.duplicati.com/u/davidtgbe)\ **Post date:** [December 31, 2023, 11:51am UTC](https://forum.duplicati.com/t/unknown-error-no-transaction-is-active-on-this-connection/13842/3 "2023-12-31T11:51:48Z")
Same problem here. 31 de dic. de 2023 12:33: Fatal error 31 de dic. de 2023 12:33: Operation Put with file duplicati-b62e9b685a3c242e097f52b841cbc2d37.dblock.zip.aes attempt 1 of 6 failed with message: unknown error No transaction is active on this connection 31 de dic. de 2023 12:31: Backend event: Put - Completed: duplicati-b62e9b685a3c242e097f52b841cbc2d37.dblock.zip.aes (16,77 MB) 31 de dic. de 2023 12:30: Uploading fragment 1/2 of remote file duplicati-b62e9b685a3c242e097f52b841cbc2d37.dblock.zip.aes 31 de dic. de 2023 12:30: Uploading fragment 0/2 of remote file duplicati-b62e9b685a3c242e097f52b841cbc2d37.dblock.zip.aes 31 de dic. de 2023 12:30: Backend event: Put - Started: duplicati-b62e9b685a3c242e097f52b841cbc2d37.dblock.zip.aes (16,77 MB) … … Error detail: 31 de dic. de 2023 12:33: Operation Put with file duplicati-b62e9b685a3c242e097f52b841cbc2d37.dblock.zip.aes attempt 1 of 6 failed with message: unknown error No transaction is active on this connection {“errorCode”:“Unknown”,“ClassName”:“System.Data.SQLite.SQLiteException”,“Message”:“unknown error\r\nNo transaction is active on this connection”,“Data”:null,“InnerException”:null,“HelpURL”:null,“StackTraceString”:" en System.Data.SQLite.SQLiteTransactionBase.IsValid(Boolean throwError)\r\n en System.Data.SQLite.SQLiteTransaction.Commit()\r\n en Duplicati.Library.Main.Operation.Common.DatabaseCommon.\<\>c\_\_DisplayClass7\_0.b\_\_0()\r\n en Duplicati.Library.Main.Operation.Common.SingleRunner.\<\>c\_\_DisplayClass3\_0.b\_\_0()\r\n en Duplicati.Library.Main.Operation.Common.SingleRunner.d\_\_2`1.MoveNext()\r\n— Fin del seguimiento de la pila de la ubicación anterior donde se produjo la excepción —\r\n en System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()\r\n en System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n en Duplicati.Library.Main.Operation.Backup.BackendUploader.d\_\_24.MoveNext()\r\n— Fin del seguimiento de la pila de la ubicación anterior donde se produjo la excepción —\r\n en System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()\r\n en System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n en Duplicati.Library.Main.Operation.Backup.BackendUploader.\<\>c\_\_DisplayClass20\_0.\d.MoveNext()\r\n— Fin del seguimiento de la pila de la ubicación anterior donde se produjo la excepción —\r\n en System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()\r\n en Duplicati.Library.Main.Operation.Backup.BackendUploader.d\_\_21.MoveNext()",“RemoteStackTraceString”:null,“RemoteStackIndex”:0,“ExceptionMethod”:“8\nIsValid\nSystem.Data.SQLite, Version=1.0.111.0, Culture=neutral, PublicKeyToken=db937bc2d44ff139\nSystem.Data.SQLite.SQLiteTransactionBase\nBoolean IsValid(Boolean)”,“HResult”:-2147467259,“Source”:“System.Data.SQLite”,“WatsonBuckets”:null} ---
**Author:** ![davidtgbe](https://forum.duplicati.com/user_avatar/forum.duplicati.com/davidtgbe/32/3037_2.png) [@davidtgbe](https://forum.duplicati.com/u/davidtgbe)\ **Post date:** [December 31, 2023, 1:32pm UTC](https://forum.duplicati.com/t/unknown-error-no-transaction-is-active-on-this-connection/13842/4 "2023-12-31T13:32:51Z")
I think it is a matter of free disk space. I changed the temp folder to a ramdrive some time ago and now, when I have tried to build a bug report duplicati complains about free disk space. I will report if changing temp path back to defaults solves the problem. Update: After changing temp path to defaults the problem has gone.