When I boot up my iMac, Messages starts but is frozen and has no response unless I shut Messages down and restart. Then it operates properly. I noticed this upon a Mac software update - not the current 12.2.1 rather the previous version. Is this an issue anyone else experiences and does Apple know about it so it can be fixed? Thanks all.
iMac, OS X 10.11
Try booting to Safe Mode. That boot up takes minutes and clears caches and other things that may resolve your problem.
How to use safe mode on your Mac - Apple Support
A lot of times just boot to Safe Mode followed by normal boot resolves problems.
Try booting to Safe Mode. That boot up takes minutes and clears caches and other things that may resolve your problem.
How to use safe mode on your Mac - Apple Support
A lot of times just boot to Safe Mode followed by normal boot resolves problems.
Messages frozen upon startup
