VSS errors on System Backups
I always get 4 VSS errors when doing a System Backup as shown below:
Volume Shadow Copy Service error: Unexpected error querying for the IVssWriterCallback interface. hr = 0x80070005, Access is denied.
. This is often caused by incorrect security settings in either the writer or requestor process.
Context:
Writer Class Id: {7e47b561-971a-46e6-96b9-696eeaa53b2a}
Writer Name: MSMQ Writer (MSMQ)
Writer Instance Name: MSMQ Writer (MSMQ)
Writer Instance ID: {c3a3e1d7-8554-46a6-ad1e-444ba20b5082
2 are with the MSMQ Writer and 2 with the System Writer.
Are the backups any good?
I'm using Backupper Pro on a Win 10 Home Version 1809, build 17763.379.
Comments
Maybe @admin can provide further details into how the fix for this is coming along???
Run c:\windows\system32\dcomcnfg.exe as administrator.
Expand console root, component services, computers.
Right-click My computer and pick properties.
Go to the COM Security tab.
Under Access Permissions, click Edit Default.
Add Network Service with allow local access checked (that's the default).
For other VSS errors, it may work to stop the associated services while the backup is running.