Volume Shadow Copy Service error EndPrepareSnapshots Cannot Find Anymore Diff Area

A common error in VSS may look like this:

Volume Shadow Copy Service error: Error calling a routine on a Shadow Copy Provider {b5946137-7b9f-4925-af80-51abd60b20d5}. Routine details EndPrepareSnapshots [hr = 0x80042302, A Volume Shadow Copy Service component encountered an unexpected error.

Fix it by allowing VSS to use more temp area:

vssadmin Resize ShadowStorage /For=C: /On=C: /MaxSize=UNBOUNDED

or

vssadmin Resize ShadowStorage /For=C: /On=C: /MaxSize=20GB

or use a larger number depending on your hard drive free space.

Do the above for all hard drives you have.

See also:

//backupchain.com/Cannot-Find-anymore-diff-area-candidates-for-volume-Volume-shadow-copy-service-error-troubleshooting.html

and

//backupchain.com/hyper-v-backup/Troubleshooting.html