Delete Global Hotkey [duplicate]

Okay, I figured it out with help from this program listed as "Windows Hotkey Explorer Free!"

which told me that it was Skype that had registered the hotkey. I'd really hate Skype if it wasn't so useful.

I assume you are talking about windows, and about a hotkey that was registered by some application with the RegisterHotKey function in the Windows API.

The answer is therefore to uninstall or reconfigure the application that is stealing the key input. It cannot steal the hotkey if it is not running.

I presume you have no trouble determining which application has registered the hotkey. After all, it should be the one currently responding with some action to the problematic hotkey.