Hyper V Duplicates recovery points

The .avhdx, .mrt and .rct files indicate checkpoint/backup activity that may not be getting fully merged or cleaned up.

Check existing checkpoints:

Get-VMSnapshot -VMName "<VMName>"

Then check VSS:

vssadmin list writers

All relevant writers should show a stable state without errors.

Also review the corresponding Veeam job/session logs.

Most importantly: do not manually delete AVHDX files.

When Hyper-V removes a checkpoint, the AVHDX contents are merged back into the parent disk. Manually deleting them can break the VHDX chain and cause data loss.