I have tried:
- Delete/reset the keychain
- Check disk permissions
- Boot in safe mode
- Delete caches manually
- Delete preferences and plists
- Reset permissions prompts (`tccutil reset All`)
- Killed processes
- Rebooted repeatedly
- Log out of iCloud and back in
- Removed all login items
Reset launch services with `/System/Library/Frameworks/CoreServices.framework/Frameworks/LaunchServices.framework/Support/lsregister -kill -seed -r /`
and still no luck. However, when I created a new user account on my Mac, that user's notifications panel (and the preferences pane for notifications in System Settings) opens fine, so it must be something inside of my user account, not something system-wide.
Even in Safe Mode, my user still cannot access anything related to widgets or notifications.
This is driving me nuts - not getting any alerts for work is so frustrating and at this point I've deleted and reset so many things that haven't helped that I just can't figure out what to try next, beyond just creating a new user on my Mac and moving stuff over and abandoning my current profile. I want to solve this, however, because it seems like there must be an explanation.
I do have Xcode and homebrew installed (which I've done `brew upgrade` and `brew services cleanup` and `brew cleanup` but that doesn't do anything either, so I actually somewhat doubt that it's related to a piece of software that we all have installed simply because the issue even happens in safe mode where nothing else starts or runs)