Unable to Login Domain Controller After Reboot

Posted on 2008-10-21
Last Modified: 2012-05-05
I installed some Windows updates on both domain controllers in our off site office and reboot them, one at a time.  After the first one came back up, I reboot the other one and now when it came up, it was very very slow, took forever for it to bring up the Windows Login, and I notice I don't have the option to login to the domain.  Meaning when I expand Options there is no Domain box for me to login to the domain.  I tried logging on locally and so far cant', also everytime I try to login it takes so long for it to come back and tell me it can't login.  I can't reboot it right now as it's over 100 miles away, I'm going to have to send an email to somebody in that office to power it down and on first thing in the morning and I have no idea if that's going to hopefully make it work, I'm really hoping so because I'm sorta a network admin newb so I'm very scared as to what is happening here.  What should I do if rebooting it doesn't help?  What sucks is it's the only DNS server in that domain too so there is no DNS server running on that domain either now because of this.  Help!
Question by:darkonex
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Expert Comment

ID: 22774311
If you can not log in, it does not mean that DNS is not running. If you have two DCs at that site, you should configure both of them to run DNS.
So, first check if DNS is running on "failed" server. Then we will go further. Anyway, no reason to panic.

Author Comment

ID: 22775621
DNS doesn't appear to be running on the failed server because if I try to connect to the DNS server snapin from the other DC, it doesn't connect.

Expert Comment

ID: 22775702
Did you reboot?

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Author Comment

ID: 22775773
Can't yet, this server is over 100 miles away from me, and I emailed somebody over there last night to reboot when they get in this morning.

Author Comment

ID: 22776057
OK it was reboot and came up completely normal and I'm logged in and DNS is running and all seems well!  What do you think might have happened?  I will check eventlog for errors when I get a chance but that was just wierd and very scary!

Accepted Solution

Dusan_Bajic earned 500 total points
ID: 22785966
Not sure, but that is Windows, such things happen :)
Now, since you already have two servers at the site, you sude configure the other also to be DNS server (and after you check that everything is without errors, configure clients to use both of them)

Author Closing Comment

ID: 31508612
Thanks for the advice, I will do that.

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