Can't connect to the Internet?

By jobeard
Jun 8, 2011
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  1. Over and over again we see posts like
    The basic facts are
    • the proper drivers are not installed - - OR
    • IPv6 is getting in the way
    The simple/cheap routers we use at home are (frankly) brain-dead regarding IPv6 --
    google that for yourself.

    *IF* ipconfig /all shows
    see this post to disable IPv6
  2. Mark56

    Mark56 TechSpot Paladin Posts: 1,886

    Interesting, and I know the thread you are quoting from. After IPv6 was disabled by the OP the wireless device has become disabled. What would be good to know is what Avast is disabling or removing that causes the problem. Has there been a recent update to Avast that has caused this? A System Restore should fix it. (I should have thought of suggesting that in the thread)

    Why did it work before the Avast scan and now it doesn't? Find the answer to this and the problem will be easily solved.
  3. Mark56

    Mark56 TechSpot Paladin Posts: 1,886

    There doesn't appear to be any explanation as to why Avast is causing this problem with some people but I found a thread which includes links for WinXP, 7 and Vista with instructions to reset Winsock and this seems to do the trick. Also turning off the Avast Web Shield allows internet connection to resume.

    Sourced from this thread

    Disable Avast Web Shield or run these fixes.

    For XP run WinSock fix

    Winsock fix for Vista

    Winsock fix for Windows 7

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