Strange backup error (to BackBlaze B2)

Support
1

I am new to duplicati. I set up a network folder backup on BackBlaze B2 and when I finish the backup task I get this error:
19 Oct 2021 15:11: Failed to process file duplicati-b75eef51fdd704cfbaa0b523aa9cb2bd8.dblock.zip

{“ClassName”:“System.Net.WebException”,“Message”:“Error: NameResolutionFailure”,“Data”:null,“InnerException”:null,“HelpURL”:null,“StackTraceString”:" at System.Net.WebConnection.Connect (System.Net.WebOperation operation, System.Threading.CancellationToken cancellationToken) [0x00044] in :0 \n at System.Net.WebConnection.InitConnection (System.Net.WebOperation operation, System.Threading.CancellationToken cancellationToken) [0x000cc] in :0 \n at System.Net.WebOperation.Run () [0x0009a] in :0 \n at System.Net.WebCompletionSource1[T].WaitForCompletion () [0x00094] in <f430a4c7c4d64c01a4d92b888f85cb81>:0 \n at System.Net.HttpWebRequest.RunWithTimeoutWorker[T] (System.Threading.Tasks.Task1[TResult] workerTask, System.Int32 timeout, System.Action abort, System.Func`1[TResult] aborted, System.Threading.CancellationTokenSource cts) [0x000f8] in :0 \n at Duplicati.Library.Main.BackendManager.GetForTesting (System.String remotename, System.Int64 size, System.String hash) [0x00065] in :0 \n at Duplicati.Library.Main.Operation.TestHandler.DoRun (System.Int64 samples, Duplicati.Library.Main.Database.LocalTestDatabase db, Duplicati.Library.Main.BackendManager backend) [0x0042f] in :0 ",“RemoteStackTraceString”:null,“RemoteStackIndex”:0,“ExceptionMethod”:null,“HResult”:-2146233079,“Source”:“Duplicati.Library.Main”}

Can you tell me how to fix it?

2

If you look at the bucket contents on the B2 console, do you see any Duplicati files? Just wondering if it succeeded in placing anything at all on B2.

3

Yes, if you look in the bucket, all the files are there. That’s what’s weird.

Screenshot 2021-10-20 at 13.39.34
Screenshot 2021-10-20 at 13.39.341610×454 48.3 KB

Screenshot 2021-10-20 at 13.39.28
Screenshot 2021-10-20 at 13.39.281886×412 63.8 KB

4

And in the log file there

Screenshot 2021-10-20 at 13.41.57
Screenshot 2021-10-20 at 13.41.571920×1136 309 KB

is an error record like this

5

These sound like DNS issues. Are you running a piHole or other unusual DNS setup? There was a thread about a set of piHole rules that allowed the test connection to B2 but nothing else. Is your internet connection reliable?

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6

Uhh. I disabled the vpn connection through Wireguard and the backup ended without error. ᕕ( ᐛ )ᕗ

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