Backup Exec 2012: Losing credentials

Hi!

I run BackupExec 2012 and it seems to "lose" valid credentials over time.

Problem: I set up a server and create a backup job, it works all right, I can browse resources and successfully back up my data. This works for, let's say, 3 days, and suddenly the backup job fails with "check point restart" failure (although I dont use check point restart at all).

When I now try to browse the server, it suddenly says: Failed browsing, wrong credentials (sorry, have the German version, don't know if this is exactly what shows in English).

If I restart the BackupExec services, everything works again.

Thanks for your ideas :-)

Best regards

Martin