In Mac OS catalina if an error shows some account services will not be available until you sign in again ( update Apple ID settings ) .
Open system preferences , click on Apple ID icon and again click on iCloud in the side bar , it prompts to enter the Apple ID and password ( enter the password ) , after that a pop up window appears to upgrade with 2FA , click on continue , the circle in front of keychain box started rotating setting up , after a while it prompted to enter the admin password and finally the box of keychain will get checked the small circle rotating in front of keychain setting up will disappear ,
You have to convert secondary authentication account to 2FA , the error will go away .
If the trusted number is not yet added verify it , click on name , password , email in the side bar , click on edit see these articles .
Change your Apple ID information
Change Overview preferences for your Apple ID on Mac ...support.apple.com › en-in › guide › mac-help › Mac
Change Password & Security preferences for your Apple ID on Mac
Change Payment & Shipping preferences for your Apple ID on Mac
Change Media & Purchases preferences for your Apple ID on ...support.apple.com › en-in › guide › mac-help
Note : every data has to be updated and get verified in the personal Mac .
