Can't sign in iCloud

Hey there wrahmadani10,

Thanks for reaching back out to us with more information. We're glad you were able to sign into the App Store. Let's look into further options for you.

First, if you start up your Mac in safe mode, are you then able to sign in? Try the following steps to test:

Start your Mac in Safe Mode

From there, try our steps here for what you can do if you're having issues signing into iCloud:

If you can't connect or sign in to iCloud

Thanks again for reaching out to the Apple Support Communities!

Have a great day!

Hi there wrahmadani10,

We see you're having an issue with signing into iCloud on your Mac.

What model of Mac are you using, and what is the macOS version running in the Apple () menu > About This Mac?

Have you been able to successfully sign into your Apple ID in other areas of your Mac like in System Preferences > Internet Accounts and the App or iTunes Stores?

We look forward to hearing back from you.

Take care!

It seems there's no solution! I have this problem too on my mac