When running a backup, with the -vss option, for the first time on a new computer, I got the following error:
Shadow copy creation failed: AddToSnapshotSet returned 8004230f
After trying a lot of things, what worked was deleting the Hyper-V provider in the VSS registry entry as was suggested in this post: Backups fail: Volume Shadow Copy errors 22 & 12292 - Microsoft Community. Was this the right thing to do? Is this expected behaviour?