Custom keyboard shortcuts not working for Excel contextual menu item I want to bind control-option-command-F to "Filter by Selected Cell's Value", a contextual menu item in Excel. As you can see in the screenshot



it appears to be associated with the correct menu item, but pressing this keyboard shortcut does nothing. Selecting this menu item with the mouse does trigger the expected behavior.

I tried binding this same combination to a regular menu item ("Split") and that worked fine, so I don't think it's an issue of this combination of keys being incompatible with another shortcut.

Can anyone explain to me why this is not working?
Check your System Preferences -> Keyboard -> Keyboard Shortcuts.

It may be that those keystrokes are already bound to a System function.