This message is displayed when attempting to log in to an SBS 2008 server and can be caused by booting into Active Directory repair mode.
To resolve:
Restart the server, press F8 and boot into Safe Mode.
Login with the domain administrator account.
Open System Configuration (Start > Run > msconfig).
Select the Boot tab and review the Boot options:
Untick Safe boot, click Apply, OK and restart the server.
After login, open System Configuration and select the Boot tab.
Tick Make all boot settings permanent and choose Yes when prompted.
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The following entries may be logged in the System log:
Source: NETLOGON
EventID: 5719
This computer was not able to set up a secure session with a domain controller in domain due to the following:
There are currently no logon servers available to service the logon request.
This may lead to authentication problems. Make sure that this computer is connected to the network. If the problem persists, please contact your domain administrator.
Source: Directory-Services-SAM
EventID: 16652
The domain controller is booting to directory services restore mode.
