Received this kind of message before..?
Fear not..!! For any “illness”, there’s always a “medicine” for it… 🙂
1. Unplug the network cable.
2. Login using you local administrator account, or any account that has administrator privillages.
3. If you managed to logon, plug back the network cable.
4. Change your domain name from FQDN (example: mydomain.local) to the shortname (example: mydomain).
5. Reboot the machine and login using the domain user name.
Everything should be okay after that.. 🙂