My Mac Mini won't sign in or connect to my Apple ID / iCloud

"My Mac Mini won't sign in or connect to my Apple ID / iCloud: Still, nothing. My information is correct when entered but this mac mini simply won't connect to iCloud. It's also the same for the App store app on this mac mini as well.[...]"

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Thank you for the screenshot.

What pops up when you click: "Forgot Apple ID or password?" Without confirming any changes, see if you can get a prompt in that way.

"My Mac Mini won't sign in or connect to my Apple ID / iCloud"

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Go Here: If you can't Connect or Sign In to iCloud - Apple Support

David Anthony B wrote:

I was prompted by the system to sign out of my Apple ID on my Mac mini.....

Perhaps some else could verify, but I do not no of any reason you would be requested by the system to sign out of your AppleID. Sounds a bit suspicious to me and you may have inadvertently installed malware that locked you out.

I have had Macs forever and since the inception of AppleID, I have never seen any system request to sign out. I have had numerous requests to sign in bu never sign out.

I kept getting a prompt that I would need to agree to terms and sign in to continue using iCloud but every time I agreed to the conditions, nothing changed and the dialog box would prompt me the next day.

Someone suggested I log out [bad idea!!!] and log back in and now I can't log into iCloud on the computer. I can use exactly the same password to log into the web portal, the app store... but not my computer.