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Hyper-V Manager 2012 Troubleshooting - Mouse Not Captured in VMs

Some Hyper-V’s VMs mouse are not working due to some services are disabled/stopped. We have to enable those services in registry by force. 

You might have seen the below error while configuring the VMs in your environment.

SOLUTION:

microsoft hyper-v virtual machine bus error in Windows 2012 [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\vmbus]
"Start"=dword:00000001