Volume Shadow Copy Error 0x800423f4 | VSS Backup error

There are many times that VSS can be a PITA! Trying to backup a HyperV VM or jsut an application and have VSS errors. There are many troublesooting options most of them doing partial job and probable wont fix any errors. The below command set from microsoft almost everytime solves the VSS problems. Actually it re-registers the VSS.

 

Open an elevated command prompt session

CD to WindowsSystem32 (depending on the version of the OS many dll’s will fail to register, you can ignore them)

Net stop vss

Net stop swprv

regsvr32 ole32.dll

regsvr32 vss_ps.dll

Vssvc /Register

regsvr32 /i swprv.dll

regsvr32 /i eventcls.dll

regsvr32 es.dll

regsvr32 stdprov.dll

regsvr32 vssui.dll

regsvr32 msxml.dll

regsvr32 msxml3.dll

regsvr32 msxml4.dll

Reboot your server.

After reboot, open a command prompt and run:

vssadmin list writers

Ensure that all your writers are displayed w/o errors.

FInally retry your backup

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