F3 expose button not working.
Yes, i've tried restarting Mission Control and yes, I've unchecked “Use all F1, F2, etc. keys as standard function keys”.
MacBook Air 13", macOS 10.14
User profile for user:
c_luc9
User level:
Community Specialist
Hello GOOP95,
Thank you for using Apple Support Communities! I understand that F3 or the button on the keyboard to launch Expose is not working as expected. You've come to the right place for help.
To help further isolate potential causes for this behavior, I suggest seeing if this continues to be an issue when you restart your Mac in safe mode:
Use safe mode to isolate issues with your Mac
If you're able to use this feature without issue, the next step would be to rule out incompatible login items:
If your Mac has a blue screen or other startup problems
Specifically, check out the section labeled “Test your login items”
Also, testing in another user account can help determine if this may be user or account related settings causing this issue. Here's how you can create a new user for testing:
How to test an issue in another user account on your Mac
Keep us posted with the results.
Best Regards.