Mac system upgrade 10.11.4 software cannot log in how to do

Mac system upgrade 10.11.4 software cannot log in how to do? After the Apple spring launch this month, Mac users have also welcomed the latest update to the OS X 10.11.4 system. But now Apple has been receiving consumer feedback that it cannot log on to imessage and FaceTime after upgrading OS X 10.11.4. Then Mac system upgrade 10.11.4 software can not login how to do?

The current problem is focused on reinstalling the OS X system and requiring the login to the FaceTime and imessage services after entering the system, but entering the correct Apple ID and password will either jump out of the wrong dialog or do not respond to the same problem on the new Mac device.

Mac system upgrade software failed to login solution:

Most of the problems that currently occur are concentrated in OS X 10.11.4, but there are also a few user feedback that there are also problems with not being logged in the previous version. The Apple support team has recommended that users try to exit icloud and temporarily turn off dual-factor authentication, but this temporary solution still does not work for most users. Apple's System Status page does not show any server downtime, which is most likely a problem with the imessage and FaceTime activation servers. Users who recently bought a new Mac say Apple's engineering team has acknowledged the problem is working to fix it.