No logon servers available
We are in the process of switching our workstations to a new domain and I have recently encountered a strange error.
Two Windows 7 machines which are connected via wifi have been giving me an error "There are currently no logon servers available to service the logon request." at the Windows login screen. Any user which has not previously logged into this machine seems to encounter the error. Users that have logged in on the workstation before are fine. When these users log in, I notice that the computer is not automatically connected to the wireless network, but rather connects a few seconds after start up.
What I imagine is happening is that the users who have logged in before are getting in via cached credentials and then are being authenticated and connected to the network. The users who haven't been logged in before aren't able to log in because the machine is not yet connected to the network while on the login screen.
The network is using WPA2-Enterprise and the users are being authenticated via User/Computer Authentication by being a member of the "Domain" and "Wireless" AD groups. I have checked to make sure all of these users and computers have the proper AD membership.
Any ideas why the computer isn't being connected to the network at the login screen so new users can log in?