I cannot sign out iCloud from an old MacBook Pro after I changed Apple ID email
I cannot sign out iCloud from an old MacBook Pro after I changed my Apple ID email.
1. My old MacBook Pro logged iCloud in with old Apple ID email.
2. Then I changed my Apple ID email and password.
3. I got the notification from iCloud that I have to log in again.
4. There is only password input box, and I always failed to login even I double checked my password.
5. I'm facing the dead loop:
- Apple ID email is changed, so I cannot login directly. And I have to logout completely for update new email.
- Keychain service is checked, so I cannot logout.
- To uncheck keychain, I have to login.
What I can do in this case?
Mac OS: 10.10.5
MacBook Pro (15-inch, Late 2011)
MacBook Pro (15-inch Late 2011), OS X Yosemite (10.10.5)