Xcode 12 "Unknown Error" when signing in with Apple ID

Question

I recently signed out of my Apple ID in system preferences since I am on a beta OS.
In order to run on device I need to be signed in with Xcode. However while trying to do so it gives me the "An unknown error occurred" message. I double checked on my password and was able to sign in with it on the web. I have not changed the password in the last year.

7.4k

Posted by

tim1

Reply

Clean Derived Data: ~/Library/Developer/Xcode/DerivedData/ModuleCache.noindex ~/Library/Developer/Xcode/DerivedData manually

Clear Xcode Simulator: Device > Erase All Content and Settings

Try Login Again: Xcode > Preferences > Accounts > + button > choose Apple ID

Make Sure:
Your VPN and DNS is offThe check those VPN/DNS, I uncheck all of the settings in System Preferences > Network > <Chose ur Network> > Advanced > Proxies > Uncheck all of those (in my Case)
Hope That Help, Cheers

—
Jeffry_Sandy

Code Block
sudo -v ; killall -9 accountsd com.apple.iCloudHelper ; defaults delete MobileMeAccounts ;
mkdir ~/Library/Accounts/Backup; mv ~/Library/Accounts/.sqlite ~/Library/Accounts/Backup/ ;
killall -9 accountsd com.apple.iCloudHelper ; sudo reboot

Xcode 12 "Unknown Error" when signing in with Apple ID

Replies