'Only serializations of exceptions is supported'

[KieranPC0R34]

Case ID: #04330786

Having a new issue with a job and can't seem to find much online or on the forums about it. The error message is pasted below,

'Error: Only serialization of exceptions is supported. The type "System.Collections.Generic.ObjectEqualityComparer`1[System.Net.IPEndPoint]" from "mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" is not an exception part.'

This is a new error in regards to this job (and one that I've not seen before personally). Job usually succeeds with a warning regarding 'one or more source networks may be mapped' which I'd fixed on some other jobs, but if I recall correctly this job was a bit stubborn to my fix and still threw the warning. I wasn't too fussed however as the job was still successful.

[Natalia Lupacheva]

Hi Kieran,

Thank you for the detailed description!
It doesn't seem to be a common issue.
As far as I see you've adviced to update .NET Framework on the affected machines. So please keep working with our Support team.

Thanks!

[gtrspctr]

Don't have anything useful to say other than I also just got this error for the first time.

[Natalia Lupacheva]

Hi @gtrspctr,

please also open a support ticket.
In this case our Support team will be able to dig into the logs and check your exact situation.
It's a technical issue and there is no general advice for such situations without checking at least the error message from the logs.

Thanks!

[bledd]

Also getting this error for Backup Copy jobs.

Using Veeam 9.5.4.2866

[Natalia Lupacheva]

Hi Bleddyn,

please check if your .NET framework on the affected machines requires an update. I see it solved the original case.
If it does not help, please open a Support ticket.
Support team would be able to check your logs and figure out what happened in your case.

Thanks!