No authority could be contacted for authentication."

my enviorment is based on VPC and my system is running vista 64x
1. Domain controller 512 MB RAM windows server 2003 and exhcange 2003 with OWA
2. Aplication server 1535 MB RAM and MOSS 2007
3. Windows XP VPC ( Dont take chance without checking it as client)

Everything was fine until i was having issue in viweing Sharepoint learing kit courses on windows server 2003 itself

My MOSS setup was based on NTLM setting. when i tried to browse the site from windows XP enviorment , i tried to login but got a error
"No authority could be contacted for authentication."

Its something i wasnt ready for, looked over on net for articles couldnt find one , than i tried someone suggesting this

The reason is that there is some corruption in Active Directory's entry of the computer hosting sharepoint. So we need to fix that:

1. You remove the sharepoint server computer from the current domain to a temporary workgroup. Restart it.
2. Goto Domain Controller and remove this computer's entry from there under Computers.
3. Again join the sharepoint server to the domain. Restart it.

Belive me my VPC was having undo disk option ON thats why i did it and i can asure u it works well, it wont break anything :) the problem was solved and i had a goodnight sleep , the thing happened at 12:38am i had a busy day which ended with this drama.

Hope no one gets these issues in real production enviorment