The VSS application writer or the VSS provider is in a bad state. Either it was already in a bad state or it entered a bad state during the current operation

I am using MS DPM 2019 for backup solution. But suddenly I got VM backup issue, the error was as below.

Type: Consistency check
Status: Failed
Description: The VSS application writer or the VSS provider is in a bad state. Either it was already in a bad state or it entered a bad state during the current operation. (ID 30111 Details: VssError:The writer experienced a non-transient error. If the backup process is retried,
the error is likely to reoccur.
(0x800423F4))
More information
End time: 4/13/2022 5:44:46 AM
Start time: 4/13/2022 5:39:06 AM
Time elapsed: 00:05:39
Data transferred: 0 MB

Cluster node HyperV01.superit.in
Source details: TestVM01
Protection group: Prod-DB-VM
Items scanned: 0
Items fixed: 0

Solution

If I run vssadmin list writers then many services will fail. If I reboot the VM then VSS services will be ok but if I restart the backup again VSS will be crashed. So to fix this problem, I simply removed the checkpoint service of VM and perform consistency check, it was successful. Then let the rest other backup run according to their schedule, they should be ok.

Please note that if you take backup without enabling “Backup (volume shadow copy)” service, VM will go into pause mode so plan accordingly a downtime window. After backup is successful, enable it back.

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