Hangs when trying to sign in using Apple ID

I can not sign in with apple id and password via xcode on Mac. I can sign in with apple id and password with Safari on Mac. I can also sign in with apple id and password on iPad. What are the reasons?

Xcode is 7.1 beta 3. Mac OS is El Capitan Version 10.11.1.

I can not sign in with apple id and password via iTunes and App store on Mac as well. Before I upgrade to El Capitan Version 10.11.1 from El Capitan Version 10.10, I can log in.

Same problem here... haven't found a solution yet.

Same here too...No work around available 😟

Try renewing your password associated w/that ID.

It hangs for me on xcode 7.1 (release) OSX 10.11.1. So far I have not found a work around

Found out that with the OS upodate to El Capitan, sign in checks for a valid serial number (as it appears in About this Mac). On one of my machines, Apple had replaced a mother board but neglected to put a valid serial number. The sign in hanged not only for Xcode but also for the App store. I took the machine to Apple store and they fixed the problem.

Hangs when trying to sign in using Apple ID
 
 
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