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Im having major problems with a new windows update. On the latests update, my internet connection becomes broken. This is very abstract. The only way that I can fix it is to obviously do a system restore to before the update.

Ive ran McAfee, Bitdefender, Spybot, Ad-aware and Malwarebytes' Anti-Malware... it came all clean (just a few tracking cookie files).

I have as well done system restore and disabled Windows Update, but it STILL kills my connection on reboot.

This is getting increasingly frustrating, as I have no idea what I can do anymore. Making a system restore everytime I want to go online is not healthy. If there is a kind soul out there that could give me some pointers, I would appreciate it.

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Im running Vista. – Petrus Jul 19 '10 at 14:47
See this question - superuser.com/questions/164742/… – ChrisF Jul 19 '10 at 14:50
ChrisF, that did not solve anything Im afraid. There are no previous restore points. And ive disabled any updates from happening, but reboot still kills my connection! – Petrus Jul 19 '10 at 14:53
What's getting installed when you run Windows Update? It may be a problem with incompatible drivers. – Velociraptors Jul 19 '10 at 15:06
Nothing in particular, it has an outlook update and a microsoft windows malicious software removal tool update. – Petrus Jul 19 '10 at 15:24
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5 Answers

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Go to command prompt and run the following command:

netsh winsock reset

Reboot after and hopefully that will correct things.

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I tried that yesterday actually. It didnt help unfortunately. Any other ideas?? – Petrus Jul 19 '10 at 14:58
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Do you still have any network connectivity? If not, it could be a fluke, and you networking card may be faulty.

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Yes the network connectivity is fine. My networking card is completely fine. Any other ideas? – Petrus Jul 19 '10 at 15:49
Wireless or wired? Also, is this your router? If so, can you connect with another computer. What protocols are you using - WEP WPA WPA2... – sound2man Jul 19 '10 at 16:52
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Try booting in Safe mode.

If the problem doesn't occur, then it is actually an installed application or third-party driver that is killing the Internet connection.

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Go to Control Panel, click on Network Connections.

  1. Try and disable your network connection. It probably won't disable. (But do this step anyhow)
  2. Reboot your computer in safe mode without networking
  3. Once your computer reboots, open command prompt (start->run->cmd)
  4. Type: net stop cryptsvc
  5. Open My Computer, locate the folder: c:\windows\system32\catroot2
  6. Rename catroot2 to oldcatroot2 (windows will rebuild catroot2 when you restart)
  7. Reboot
  8. Go to Control Panel, Network Connections and Enable your connection again (we disabled this before, even though it may not have let you)
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Completely remove any third party firewall software, then do the update and reboot. If this solve the connectivity problem, then try reinstalling your security software. Many firewall products don't tolerate updates to components they monitor or interface with, and rather than reporting the issue, they just block all connections.

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