icloud id
I changed my user id for icloud on my ipad, phone and mac. It has changed to the correct one on everyone device except the mac.
iMac Pro
Question marked as
Best reply
What happens when you tried to change it on the Mac? Error message(s)?
If you have changed your ID or password, have you followed the steps in this article?
What to do after you change your Apple ID or password - Apple Support.
Have you tried signing out of System Preferences/iCloud (Apple ID for Catalina), restarting, and then signing in with the newID?