Print Screen Key freezes Windows

Today i had a strange problem on my windows machine that every time i press the "Print Screen" key to capture a screenshot windows will freeze immediately. I thought that this is only a temporary problem,  but after a hard reset i got the same problem again after retrying to create a screenshot.

It took me some time to figure out that the problem is not bug, but a feature. Last week i have used the Windows Kernel Debugger on my machine and one of the feature of the Debugger is that when you press the "Print Screen" key the kernel stops and try to connect to a WinDbg session. When there is no Debugger attached it will wait infinitely. So if you have the problem that your windows freezes on print screen check if the kernel debugger is enabled.

To check/deactivate the debugger start "msconfig.exe" with admin privileges and disable the debugger in the extended options on the start tab.