Command-Control-Shift-4 doesn't work. How to capture portion of screen to clipboard? [duplicate]
You can always use the built-in "Screenshot" app to select things to take a screenshot of.
I use cmd-shift-4. Without the control key.
Otherwise, I'd suggest checking your keyboard shortcut settings and just make sure that nothing else is using your command.
It worked on my machine (Big Sur 11.4). I didn't even know this shortcut existed until I saw this question. Is the shortcut enabled in Keyboard settings? The settings screenshot below was created using Command-Control-Shift-4 and pasting directly into SO's Image box
