Synthetic full backup failed: Agent: Failed to process method {Transform.CompileFIB}： An unexpected network error occur

[xiangwu]

The case number is 05917324.
Synthetic full backup failed with an error:
Agent: Failed to process method {Transform.CompileFIB}： An unexpected network error occurred. Failed to flush file buffers.

Synthetic full backup always failed with the error. I think it is related to QNAP NAS with AD domain joined.

Any suggestions?

[foggy]

Thanks for opening a case. How the NAS is added to Veeam B&R? Any chance it is a remote device without a gateway server nearby?

The only suggestion (in case it is not a configuration issue) is to wait for the support engineers to review the log files. It is impossible to guess without thorough debug logs and network traffic dumps investigation.