I've reset my password 2x already & still not working. Says "unknown error occurred". Called support and shared my phone screen and used camera pointed at MBP screen and was told it's my operating system. I updated to Monterey about 2 months ago and it's been working fine until this morning.
MacBook Pro 15″, macOS 12.7
This worked years ago for me but I cannot guarantee it will still work now. So please ensure you have a backup!
What worked for me:
This worked years ago for me but I cannot guarantee it will still work now. So please ensure you have a backup!
What worked for me:
It just started working out of the blue after a restart and doing a scan using Clean My Mac X. I got a pop up message on my phone saying "a device now has access to iMessage".
I'll need to do a backup then first.
Always a good idea to have at least one backup at all times!
Suddenly Can't sign in to iMessage on MacBook Pro 2015 (Monterey)
