I cannot log into Apple ID after latest upgrade to iMac

Hello Kåre17,

Thanks for using Apple Support Communities. Are you able to sign in with your Apple ID elsewhere? For instance, try signing in at iCloud.com and see what happens there. That will isolate this a bit.

If you are able to sign in at iCloud but not on your Mac, try accessing safe mode on your Mac and see what happens there. Since safe mode prevents some processes from starting it can be a good way to narrow things down. Use the guidance in Use safe mode on your Mac - Apple Support to get started.

If you are not able to sign in to iCloud using the link above either, that might indicate there is an issue with your Apple ID. In that case, it may be best to reach out to Apple Support from Get Support.

All the best.

Hello Kåre17,

Thanks for the additional information regarding your Apple ID issue.

How to access safe boot mode:

• Start up your Mac in safe mode - Apple Support

If you need continued assistance, please reach out to the AppleCare phone support team via this link: Get Support.

Cheers.