Try holding ctrl+shift when clicking ok to delete and you'll be asked if you want to "kill" the computer from the vWorkspace Management Console. Please be advised that you should only use this if a normal delete fails because you will circumvent the normal ‘checks’ when deleting.
Hello,  I am stuck in much wired issue. I had some VDI configured in Desktop Computer Group. Somehow accidentally one the VDI got deleted from Hyper-V console. Now since according to vWorksapace that VDI is running but it actually no more exist in environment. I tried to delete that VDI from Group but it gave me error "Failed To start Operation"  Please help and guide me about how can i clean this Deleted VDI from computer group.  Cheers  Mohit Goyal
Clean up Computer group