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Cannot connect to WPA2 Wireless after XP SP3 Install

    Question

  • Hi,

    I have encounterd several users' laptops that cannot connect to WPA2 encrypted networks after installing SP3.

    (They show up in the Windows Available Wireless Networks list, but don't show the "WPA2" beside them as they should, and when you try to connect you get the standard error.)

    Before SP3 was installed it worked fine - and they can still connect to WEP networks.

    I've seen a lot on this online, but can't figure out a quick resolution - if there is one.

    In one case I unintstalled SP3, installed the WPA2 updates, and then re-installed SP3 - and I think that solved the problem.

    There doesn't seem to be any correlation to particular hardware.

    It's the same problem as I've seen when the WPA2 Windows updates aren't applied, except that when you try to install them now (with SP3) it won't let you, as "a newer version is already installed."

    If anyone can shed some light on this, it would be appreciated.

    Ben in CA
    Tuesday, April 14, 2009 5:45 PM

All replies

  • Hi,

    Thats a Problem from SP3 !
    Uninstall SP3 and install SP2 or install a driver from third party developer. Then it works!
    • Proposed as answer by JohannesR Wednesday, April 15, 2009 6:35 AM
    Wednesday, April 15, 2009 6:29 AM
  • Ben, the first thing to check is that the Device Drivers for the wi-fi cards are updated to the latest level: you will need to get them from the manufacturers' support sites.  Working at WPA2 requires both operating system support (which is pre-built into SP3) and Device Driver support.
    Robin Walker
    Wednesday, April 15, 2009 1:29 PM
  • Perhaps I should clairify -

    Before SP3 Automatically installed, his computer was able to connect to WPA2 encrypted networks. (I had installed the particular Windows updates relating to this.)

    In this particular case, it's an older Acer laptop with a PCMCIA D-link DWL-650G - which doesn't have any more recent drivers - but I don't think that's the problem, since it was working on WPA2 beforehand.

    (I've also had this happen on a recent model HP laptop with integrated wireless. On that machine, I had to entirely uninstall SP3, install the wireless updates, and then re-install SP3 again - and for some reason then it worked.)

    Any other ideas - that's a several hour process on a slow computer - I'm thinking there's probably a patch or registry edit that I could run that would do the same thing?

    Ben in CA

    Friday, April 17, 2009 5:44 PM
  • Ben, the first thing to check is that the Device Drivers for the wi-fi cards are updated to the latest level: you will need to get them from the manufacturers' support sites.  Working at WPA2 requires both operating system support (which is pre-built into SP3) and Device Driver support.
    Robin Walker

    Hi Robin, I assume your a tech supt. agent for someone by your answer. I too am having fits going from WEP ore WEAP as it
    should be called.

    I recently purchased two Linksys *600N A/B/G/N wireless network adapters and have installed the latest driver from Cisco's CD.
    Previously I've only managed to connect once but strangely adhoc to my ddwrt'd linksys router and that, was with a Wildpackets driver.

    Microsoft doesn't seem to be full of answers these days as it took a third party site to detail how to re-install the WZC service
    on a laptop that had WZC service deleted by it's previous owner. This has been an arduous task to say the least.

    What I discovered while trying MS's WZC reinstall was this:

    1. When I dl'd the "sp2" wzc service installer it complained that It had to be installed on SP1 !!! Thats what the error msg. said.
    2. There is no sp3 WZC service installer anywhere on Microsofts site.

    Now to the Linksys (Cisco) adapter card and usb stick, (I have both). Attempting connection with MS WZC, WEP2-AES encryption.

    1. When I tried the Cisco Linksys driver only (everyone adamantly suggests NOT using the Cisco setup utility, check amazon.com)
        there was no joy. No matter how long I made the key it would not connect.
    2. * I checked thier site for a new driver... Same date on their newest driver file *
    3. I did get a computer to "computer" connection established once with the Wildpacket driver which is Un-signed.
        but never a computer to AP connection. That was useless.

    Two days spent on all of this and nothing.

    I wont upgrage to Windows 7 because the compatability checker says my Radeon Video Card won't run the Aero interface ?!?
    Maybe in time. XP had a rough start with drivers too.

    Do you have any other suggestions besides check for a newer driver ?


    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    Update:

    Okay... I got a connection today, but only after changing the routers channel to ch. 6., a very crowded channel probably because
    its not apparent where to set it in the WZC setup. Where in the world can you set the channel manually in WZC these days. I'd swear
    that I used to be able to do that before. I checked the driver settings, there's no place there.
    I am comfortable editing the registry. Is that how I have to do it and if so Where is the reg_key please ?
    Sunday, November 01, 2009 11:13 PM