At the time of deleting a snapshot from any of the virtual machines automatically deletes from the GUI, but it does not merge into the parent VHD till the VM is off and merge completes. This can cause a major issue if you run out of space and .AVHD keeps increasing. Due to insufficient space to merge the snap-shot, VM will automatically pause.

The only solution to this is monitoring the pending deleted merges by monitoring the following entry in the config file of each Hyper-V VM :

configuration/global_settings/disk_merge_pending = true

Let’s analyze them one by one :

a. 0x800704C8 : Requested operation cannot be performed on a file with a user-mapped section open
b. 0×80070037 : Failed to Power On with Error ‘The specified network resource or device is no longer available.’
c. 0x800703E3 : I/O operation aborted because of thread exit or application request

Thes issues can be caused by an Anti-virus software installed in the parent partition and real-time scanning component configured to monitor the Virtual Machine Files

If you haven’t planned your server performance, you will definitely need to re-consider your RAM allocations. In short, a fixed virtual disk is faster than a dynamic virtual disk. Make sure that integration services are already installed in the VM.

If you are seeing this error, you need to check the permissions on the .vhd, .avhd or .xml file

To understand, it is caused due to mis-configuration between the VLAN ID used by virtual machine and VLAD ID configured on the phydical network switch. You can solve it by configuring the virtual machine to re-configure the VLAN