Settings won’t open in Mac
It’s greyed out and I can’t update anything.
MacBook Air 13″, macOS 15.3
Have you restarted your Mac lately?
Rebooting is the best first step in troubleshooting.
If a simple reboot of your Mac doesn’t fix things, see if the problem still happens in safe mode.
How to use safe mode on your Mac - Apple Support
Safe mode will often correct weird software behavior by forcing the OS to do disk repair, clear caches and other housekeeping and temporarily disables third-party mods.
Does the same thing happen while in Safe mode?
You can exit safe mode by restarting your Mac normally, then reevaluate the problem.