To work around this change the Hyper-V Server RDC intercepts all of these key combinations before the Virtual Machine Connection, including the release key combination. If you use the Virtual Machine Connection under an existing Remote Desktop Connection.Some find it easier to change the release key combination to be CTRL + ALT + SHIFT. and then Release Key and selecting one of the options from the drop down. You can change the rele ase key combination (CTRL + ALT + LEFT ARROW) by going to the Hyper-V Manager and selecting.Keyboard and selecting the Use on the virtual machine option. CTRL + ALT + DEL will always go to the physical computer - so you need to use CTRL + ALT + END no matter what you select for a setting here.
Manager and selecting Hyper-V Server Settings. To send the standard Windows key combinations to the virtual machine (only when the Virtual Machine Connection has focus), in the Hyper-V To switch back to window mode, press CTRL+ALT+BREAK. By default the standard Windows key combinations are NOT sent to the VM, unless you are in full screen mode.The Virtual Machine Connection window uses standard Remote Desktop Client (RDC) to connect to the virtual machine. In Virtual Server this functionality was called "VMRC".
For more information about installing Virtual Machine Connection, see
WINDOWS CTRL U INSTALL
You also can install it separately on certain Virtual Machine Connection is installed automatically when you install the Hyper-V role on a full installation of Windows Server 2008 R2. Hyper-V provide a "Virtual Machine Connection" for interacting with a VM. This information is useful for troubleshooting, as well as routine operation. Applies To: Windows Server 2008, Windows Server 2008 R2