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Signs of a corrupt tcpip.sys

I have come accross several cases of a corrupted or missing tcpip.sys file in the past few weeks, possibly the result of a failed windows update or third party software install.
While easy to repair, this problem can have massive impacts on a system, virtually severing all levels of network connectivity.
Symptoms
“unable to query host name” being generated when issuing the ipconfig command
The network status constantly showed “Network cable unplugged”
Could not start the ICS service
Using the LAN repair function resulted in Failed to query tcp/ip settings for the connection. Cannot proceed
LAN Support tab contained no data at all.
Fix / Solution
After a period of troubleshooting we noticed that tcpip.sys was missing from our Windows\System32\drivers folder. Once we had identified this we were quickly able to source a copy of the file tcpip.sys and copy it into the above directy.
Once the computer is restarted it should regain all network connectivity.
We have attached a copy of tcpip.sys should you need to replace yours.
NOTE: Attached file (tcpip.sys) is for windows XP only

I have come accross several cases of a corrupted or missing tcpip.sys file in the past few weeks, possibly the result of a failed windows update or third party software install. Update – Comments on the old blog indicated that this corruption may have been the result of malware / virus or its removal.

While easy to repair, this problem can have massive impacts on a system, virtually severing all levels of network connectivity. The fix should take you about 15 minutes and have you up and running in no time.

Symptoms

“unable to query host name” being generated when issuing the ipconfig command

The network status constantly showed “Network cable unplugged”

Could not start the ICS service

Using the LAN repair function resulted in Failed to query tcp/ip settings for the connection. Cannot proceed

LAN Support tab contained no data at all.

Fix / Solution

After troubleshooting we noticed that tcpip.sys was missing from our “Windows\ System32\ drivers” folder. Once we had identified this we were quickly able to source a copy of the file tcpip.sys and copy it into the above directy.

Once the computer is restarted it should regain all network connectivity.

We have attached a copy of tcpip.sys should you need to replace yours.

NOTE: Attached file (tcpip.sys) is for windows XP only

Signs of a corrupt tcpip.sys, 5.0 out of 5 based on 4 ratings

Attachments

tcpip.sys
Title: tcpip.sys (2156 clicks)
Caption: tcpip.sys
Filename: tcpip.sys
Size: 352 KB

9 Responses to “Signs of a corrupt tcpip.sys”

  • Jim W - January 11, 2010 at 2:59 pm

    Thanks so much, solved my problem in a jiffy.

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    Rating: +2 (from 2 votes)
  • Jim W - January 11, 2010 at 3:00 pm

    Solved my problem, thanks so much!!

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  • William Marleau - January 31, 2010 at 8:02 am

    After many many hours spent on this problem (including Microsoft fixes) with no result; your solution saved the day.
    Thanks 1,000,000

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    Rating: +2 (from 2 votes)
  • Max - February 28, 2010 at 9:42 am

    This did not work for me. I just downgraded from Vista. Any other ideas?

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  • michaelj - April 15, 2010 at 9:47 am

    THANK YOU very much!!! That bit of information saved me hours of work!!!!!

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  • stacy - January 5, 2012 at 6:25 am

    where is the the tcpip link?

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  • gary - January 7, 2012 at 2:33 pm

    where is the attached file?

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  • Will - January 10, 2012 at 9:07 am

    Yeah, just had the same error occur within the last hour. lucky i had a notepad and pen. and looks like my old one was about 8 years old.

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  • Will - January 10, 2012 at 9:08 am

    and the attached file is right below the Attachments heading

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