After Monterey Update, F keys and space bar not working at all.

NoraMegharbi wrote:

I have just updated my MacBook Pro 2015 to Monterey OS and the F keys along with the space bar do not work properly anymore.

Please help! Thanks in advance.

—>System Preferences > Accessibility > General and Mouse and Trackpad and make sure it is turned off

ref: Control the pointer using Mouse Keys on Mac

Control the pointer using Mouse Keys on Mac - Apple Support

—verify Full Keyboard Access did not get turned on:

>System Preferences>Accessibility>Navigation

ref:Navigate your Mac using Full Keyboard Access - Apple Support

Navigate your Mac using Full Keyboard Access - Apple Support

To trouble shoot further you can:

—Test issue in another user (or guest user) account Set up users, guests, and groups on Mac - Apple Support

This will tell you if it a universal issue or isolated to your user/admin account. 

—SafeBoot How to use safe mode on your Mac - Apple Support will sort many anomalies

Takes a bit longer to get to the login screen, does a quick disk repair before it fully boots up, and certain system caches get cleared and rebuilt, including dynamic loader cache, font cache, etc., third party system modifications and system accelerations are disabled.

Login and test. Reboot as normal and test. Caches get rebuilt automatically.

a reboot will put it back to normal mode.

This test will tell you if third party interference; extensions etc are not loaded in safe boot mode.

Uninstall all third party apps that are Cleaners/Optimizers/VPN/Anti-Virus

all known to cause issues on the macOS