Hey! In Yosemite my MacBook was connected to both an Open Directory server and Active Directory server for login, however they never worked due to the fact it wouldn't connect to the enterprise wireless network at the lock screen. I was using my local account to login to the MacBook but on OS X 10.11 it shows a loading symbol and doesn't login (like it would if I tried to use a network account in Yosemite) however it does open messages about two minutes after attempting to login.
Cannot login
If anybody knows how to remove Open/Active directory servers from single user mode that would be very helpful