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Windows 2003 cannot connect to Internet

Posted on 2014-11-06
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Last Modified: 2014-11-06
We have a Windows 2003 Server which has been running fine but seems to have lost its connection to the Internet. We can ping or browse to any LAN connection without an issue. It is also resolving DNS names fine.

So far, we have turned off the anti-virus, disabled the Firewall, downloaded and installed all the latest Microsoft patches and rebooted the machine several times to no avail.

Any help here would be greatly appreciated. We're at a loss on this one.
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Question by:TelecoSouthFlorida
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LVL 34

Expert Comment

by:Seth Simmons
ID: 40426320
downloaded and installed all the latest Microsoft patches...

how did you do this if you don't have internet access?
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Author Comment

by:TelecoSouthFlorida
ID: 40426328
We did that last week before we were having this problem and, as a matter of practice, we always test all connectivity after doing so. This tells us that recently downloaded/installed patches are not the problem.
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Expert Comment

by:jo80ge121
ID: 40426358
Make sure you proxy settings are off if you don't need it.  

Control Panel - Internet options - Connection tab - LAN settings.
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LVL 34

Expert Comment

by:Seth Simmons
ID: 40426360
can you ping the gateway?
if so, can you do a trace route to 8.8.8.8 ?
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Author Comment

by:TelecoSouthFlorida
ID: 40426389
Proxy settings are turned off; Internet Explorer Enhanced Security Configuration is not installed; have tried Firefox; can ping any IP on the LAN including the gateway with no issues. Tracert shows the following results:

U:\>tracert 8.8.8.8

Tracing route to google-public-dns-a.google.com [8.8.8.8]
over a maximum of 30 hops:

  1    <1 ms     1 ms    <1 ms  50-196-70-198-static.hfc.comcastbusiness.net [50
.196.70.198]
  2     *        *        *     Request timed out.
  3     *        *        *     Request timed out.
  4     *        *        *     Request timed out.
  5     *        *        *     Request timed out.
  6     *        *        *     Request timed out.
  7     *        *        *     Request timed out.
  8     *        *        *     Request timed out.
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 11     *        *        *     Request timed out.
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Author Comment

by:TelecoSouthFlorida
ID: 40426396
Another note: We have Logmein installed on this computer for remote access which has stopped working as well but we can connect remotely through an RDP connection.
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LVL 34

Expert Comment

by:Seth Simmons
ID: 40426399
can any machine get internet access?
have you tried power cycling your comcast modem?
once in a great while i have connection issues with comcast but after rebooting the modem it's fine
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Author Comment

by:TelecoSouthFlorida
ID: 40426411
Yes, the Comcast modem has been power-cycled twice. There are 22 other computers in our environment, including our domain controller, and none of them are experiencing this problem.
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LVL 34

Accepted Solution

by:
Seth Simmons earned 500 total points
ID: 40426429
something with the modem is blocking access since the first and only hop is the modem itself
i would look at changing the IP address of the server and see if it works
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Author Closing Comment

by:TelecoSouthFlorida
ID: 40426461
Unbelievable! Changing the IP address worked. Never looked at the simple solution. Thank you for your help Seth... this has been driving us nuts!
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