Cannot ping


I recently took over a server in a school. I was trying to update the server when I noticed the machine couldn't ge to windows update. On firther investigation it won't ping any part of NSLookup seems to work but it won't ping (Ping request could not find host Please check the name and try again.) or browse to or obviously windows update.

The setup is that the school gets its broadband through a VPN on a Cisco. There are 2 nics in the server and it's acting as a router to create a separate network on the LANside of the Cisco. I'm seeing some issues in relation Master Browser errors in the logs so I wanted to update the machine to get a line in the sand. Very frustrating. Have tried a lot of things but feel like a need a fresh look.

Any help, please!
Who is Participating?
psychogrConnect With a Mentor Commented:
I know some viruses mess up networking and block access to *.windows.* sites.
I bet you cannot browse either..

All you have to do is to download Microsoft Removal Tool (MRT) and scan your system with it.

Good luck
Ping is unfortunately not always usable. Try to see if you can reach it with traceroute. Windows traceroute command would be "tracert". Try without DNS and with.

tracert -d

You should at least be able to reach somewhere in microsofts network

Here's a trace from me (2 first disguised). From 11 and on there is some ACL that's hindering the backets to get through.

 3 (  11.503 ms   11.025 ms   14.410 ms
 4 (  24.142 ms   23.404 ms   22.675 ms
 5 (  115.520 ms   116.533 ms   116.582 ms
 6 (  117.938 ms   117.530 ms   118.012 ms
 7 (  200.890 ms   201.644 ms   201.141 ms
 8 (  200.353 ms   200.358 ms   201.052 ms
 9 (  201.167 ms   201.967 ms   201.364 ms
10 (  193.427 ms   193.100 ms   192.987 ms
11  * * *
12  * * *
13  * * *
14  * * *
15  * * *
16  * * *

Here's a tcp traceroute to port 80 on

Tracing the path to ( on TCP port 80 (http), 30 hops max
 3 (  11.670 ms  10.695 ms  11.268 ms
 4 (  15.591 ms  14.936 ms  15.183 ms
 5 (  115.036 ms  114.969 ms  109.384 ms
 6  115.165 ms  114.916 ms  116.334 ms
 7 (  194.850 ms  195.860 ms  189.556 ms
 8  * * *
 9  * * *
10 ( [open]  193.104 ms  195.369 ms  188.923 ms
Matt DaviesCommented:
Have you checked for virus infection? There are a few classics that screw up access to Microsoft and a number of AV sites such as McAfee or Symantec.
Worried about phishing attacks?

90% of attacks start with a phish. It’s critical that IT admins and MSSPs have the right security in place to protect their end users from these phishing attacks. Check out our latest feature brief for tips and tricks to keep your employees off a hackers line!

Lukasz ChmielewskiCommented:
Any proxy server / firewall hardware ? Is there any WSUS server in the network ?
tomfogartyAuthor Commented:

To answer all questions together!

See result of tracert below
C:\Documents and Settings\Administrator>tracert -d
Unable to resolve target system name

C:\Documents and Settings\Administrator>tracert
Unable to resolve target system name

See result of nslookup
C:\Documents and Settings\Administrator>tracert -d
Unable to resolve target system name

C:\Documents and Settings\Administrator>tracert
Unable to resolve target system name

I'm running a virus scan now. I'll update as soon as it's done.

Not aware of any proxy/firewall hardware. I'm checking the WSUS situation - how would this affect it?

How does the fact that this server is effectively a router impact on this problem/DNS. I wouldn't have thought it would impact on it. I have tried pinging other sites like yahoo/google and other browsing and all seems OK. I have also flushed DNS, recreated DNS zones and checked the HOSTS file.


Lukasz ChmielewskiCommented:
Did you actually >>restart<< DNS service ? Did you try to reach MS site with an IP address ?
tomfogartyAuthor Commented:

Server has been restarted serevarl times. Have tried a resolved IP to get to MS but it doesn' ping. This doesn't tell me anything though since pinging on any machine won't return anything because presumably they have ICMP turned off on the outside.

Suryanarayan Balakrishnan IyerSenior ConsultantCommented:
Check if can ping any other website from your system.  ICMP to would not work. Check your DNS binding and check with the ISP since you would be forwarding your packets to the ISP DNS.
tomfogartyAuthor Commented:
Apologies for the delay in getting back - MRT did the trick.
Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

All Courses

From novice to tech pro — start learning today.