I have assigned shortcut keys for 4 Categories in Outlook, assigning them to
Ctrl+F2 through Ctrl+F5
using the dropdown in the Categories-dialog.
However, none of the shortcuts are working, i.e. nothing happens when I press the shortcuts.
I have tried assigning them to other combinations like Ctrl+F10, but with no result.
I'm running on a Danish keyboard, but I have no problems with any other shortcuts.
If someone should stumble over this later, the accepted answer below solved if for me in this instance. However, I have later encountered the same problem again. This time the keys were "moved" 5 places up. So the category that should have been assigned using Ctrl+F2, could be assigned by using Ctrl+F7!