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server 2003 suddenly invisible on network

Posted on 2010-11-29
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Last Modified: 2012-05-10
Ok I have a critical issue,  I have a windows server 2003 box that will not respond to anything on the network.  It’s a single server, running active directory and exchange.  No particular errors in the logs, it can see everything on the network, it can ping everything.  But nothing can ping it, our barracuda box can’t deliver email to it, no DNS lookups from it.

Tried a new nic card since it has the same problem in safe mode with network support, updated the driver.  It’s definitely something in windows.

Please help, if I don’t get it fixed this evening, I will have to start reloading it.
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Question by:chris_nt
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6 Comments
 
LVL 6

Expert Comment

by:coalnine
ID: 34234716
have you tried to use nslookup or anything from that server?
might be something as simple as ipconfig /registerdns

Kenny
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LVL 59

Expert Comment

by:Darius Ghassem
ID: 34234806
Reset the TCP\IP stack.

http://support.microsoft.com/kb/317518

Disable the old NIC use the new NIC
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LVL 9

Expert Comment

by:IntegrityOffice
ID: 34235348
can it browse to itself, start run \\server? can it ping itself?
Check all the services have started, start run, services.msc I once saw some Java stuff from APC stop a server reponding just liek you describe, but it was about 4 yrs ago.

have you got the firewall acedentally turned back on? have you got a 3rd party firewall installed? have you got a malwhere that is stopping the server responding?


some thoughts.
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Author Comment

by:chris_nt
ID: 34235997
nslookup runs fine on the server...

Tried to reset tcip stack, didn't help

the server can browse itself.

no 3rd party firewall software.

when i ping the server from another device, i see the packet hit under the network status.  so i know it's getting there, but no reply.

scanned for malware and viruses.
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Accepted Solution

by:
chris_nt earned 0 total points
ID: 34236220
ok, problem solved.  it seems there was corruption in the rras services. when i disabled it, the issue went away.

Thanks for the help anyways.
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Author Closing Comment

by:chris_nt
ID: 34877879
Solved my own problem
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