I have a Hyper-V server with a virtual machine that had some snapshots. I no longer need these snapshots so I deleted them from the Hyper-V management GUI. There are no more snapshots for this VM.
When I shut down this VM, merging should start so I end up with 1 clean VHD file instead of 1 VHD + 2 AVHD files. However, it does not seem to work.
In the event log I can see the following message: <VM NAME> background disk merge failed to complete: General access denied error (0x80070005).
The virtual disk resides on a volume with 16GB of free space. The VHD file is 100GB and the 2 AVHD files are 1.5GB and 8GB. As far as I can see, this should be enough space for merging.
Do any of you have some experience on this?