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Cannot log on to server

I am unable to log on to a server in my domain. i first noticed the server was unreachable via remote desktop. I received the "'windows cannot connect to the domain, either because the domain controller is down or otherwise unavailable, or because your computer account was not found. Please try again later. If this message continues to appear, contact your system administrator for assistance" message.

Nest I went to the server console and was able to access it there. There was a message from the Symantec SMTP Gateway that it could not contact my Exchange server. I then rebooted the server and from that time I have not been able to log on. I have used several admin names and tried safe mode, RAC, restore to previous version and local computer. I can ping both the IP and the server name. I do not see it listed with my other servers (4) in AD.

This *may* be related to a recent Microsoft update I did this weekend.

The server is a Dell PowerEdge 2650 running Server 2003 and is a member server running SMTP Gateway. It is a backup gateway so is not critical (yet).



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Buckeroo_Banzai
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Buckeroo_Banzai
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2 Solutions
 
Darius GhassemCommented:
You can change the local admin password by using this tool.

http://home.eunet.no/pnordahl/ntpasswd/

Try to get in then see if you have any errors in the Event Log.
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geemaleCommented:
I would suggest that the computer account has been disabled but you can't even login locally.  

When you try to login does it display an error message?  If not it could be a corrupt userinit file.

If you unplug the network cable does it allow you to login with cached credentials?



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Buckeroo_BanzaiAuthor Commented:
dariusg - I used the Offline NT tool to change the local admin PW but was still unable to log on. Nice program though, thanks for making me aware of it.

geemale - I unplugged the network cables and...taadaa...I was able to log on using my usual network admin username/PW.

I plugged the cables back in and could get online and map to other servers but they cannot map to this one. The event logged is naturally filled with errors after all my rebooting but most of them seem to deal with authentication errors. What would you suggest my next step be? Is it possible to roll back the latest MS updates? I still do not see this server listed in AD.

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Darius GhassemCommented:
Remove it from the Domain then re-add the computer to the domain.
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Buckeroo_BanzaiAuthor Commented:
dariusg - As the server is not visible in AD what would be the best way to go about adding to the domain? Should I do it from AD in my DC (add to server group)?
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geemaleCommented:
Hi, glad you're making some progress.  Perhaps the computer account has become orphaned.  See if it's in the lost and found container.

Failing that the quickest fix will be to remove it from the domain and join it again so that the computer account is recreated in AD.
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Darius GhassemCommented:
Remove it from the PC by going to right-click My Computer go to properties select Computer name click Change then set it to a Workgroup. Once you have restarted the server go through the same steps and re-add it to the domain.
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Buckeroo_BanzaiAuthor Commented:
Had a little problem as when I removed the computer from the domain the local administrator account still wouldn't let me log on. Used the Offline NT disk to promote another account to admin group and was able to rejoin my domain. Getting some notices now that there are some error so running a chkdsk. These are probably what caused the problem in the first place. Please consider this problem solved. Many thanks to you both for the prompt and accurate responses!
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Buckeroo_BanzaiAuthor Commented:
Thanks again guys! Great advice.
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Darius GhassemCommented:
Good I'm glad it is working. Please close the question if your problem is solved.
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