Currently I am testing backups under Hyper-V lab Environment running on Windows Server 2016, Backups are just working fine, until one fine day when I received an error indicating "Snapshot not being able to be executed".
Upon further checking on the Source VM, I noticed one of the AVHDX files is being hold by a process, I tried shuting down the VM and try merging the disk manually, but error message persist regarding the disk being in use by another process.
Also noticed under the Hyper-V Management Console that there are no snapshots in place. My Guess is that the AVHDX must have been orphaned from a previous backup which was attempted.
Wondering if there is anyway for me to recover/merge this avhdx and proceed with my backups again ?
As always thanks for your help in advance guys

Regards,
Wen Jun.