This error is described in the error message guide.

The strange thing is, it only happens with Windows2003/2008 VSS save sets. The +- 30 Windows clients are spread in different groups and the backup-network is balanced over different switches. In the groups, there are different linux and unix backup-clients which backup flawlessly.

After rebooting the server, the backups run without errors for a period of time. The errors pop up after a while.

The customer doesn't want to reboot the server. They want to know what the cause is (event logs show no deviations) and how to prevent this in the future.

VSS ASR DISK:\ 39078:save: RPC error: Server can't decode arguments
VSS ASR DISK:\
VSS ASR DISK:\ 7162:save: save of VSS ASR DISK:\ to emc.backupserver.com failed

This message repeats for the different Windows clients.

Please, point me in a direction so I can resolve this issue.