Domain controller unable to log into Windows error
Posted on 2008-11-17
First of all let me explain that for the purpose of this post I shall be talking about PDC (primary domain controller) I know this doedn't exist in the Win 2003 world but for ease of explaining this post it kind of makes sense to me, I hope it does to you.
on Saturday I had to do some maintenence that involved turning All servers OFF.
This is because the KVM switch need replacing.
I gracefully closed all servers down with the Primary DC being last.
I have my Active Directory spread over 3 DC's with FSMO roles on ONE PDC, I have not yet spread the FSMO rolls across DC's, the 3 DC's replicate themselves. I have done this by running DCPROMO on a member server X2 and followed instructions.
I have DNS running on 2 servers and 3 DC's are Global Catalogues as well (as it is not a particularly huge domain)
Ok, I plugged the PDC in to the new KVM switch and turned it on.
Because I was having trouble with the KVM switch displaying on the monitor, I was only able to log onto the PDC using Remote Desktop.
This was ok until......message = "Domain Unavailable please contact your administrator"
Please note that I was loggin onto the PDC with Domain admin login.....and so effectivly the PDC couldn't log onto its own self?????
So I panicked and things started going in slow motion....I thought I had lost the domain, and I felt sick.
Please can someone explain why it is that the PDC took 25mins to allow me to finally log in to it and bring the domain back up?
Also, IF the unthinkable had happened and the PDC was dead (thank goodness it decided to play ball) what would be the procedure for bringing 1 of the other 2 DC's into the roll of PDC if I was unable to log in to the domain on the PDC what hope would I have had finding the domain on the other DC's?
My nerves are shredded I can tell you.