XP Forgets WEP Key?

Discussion in 'Networking Issues' started by HomeITGuy, Oct 28, 2008.

  1. HomeITGuy

    HomeITGuy Addicted to LI Member

    I recently had to switch my WRT54G from WPA to WEP security, because a new device only supported WEP.

    This went fine, except for one XP laptop, which periodically "forgets" the WEP key, and when I check its settings, has the "The key is provided for me automatically" checkbox selected. So I unselect it, enter the key, and everything is fine for a while (minutes to days), and then the connection is broken again.

    FWIW, the laptop isn't moving, and the signal strength looks OK. Several other devices and laptops do just fine. It's just this one XP service pack 2 machine that has the problem. I have upgraded to what I believe is the latest firmware (1/08).

    I've seen several references to this problem on the web, but can't find any successful resolutions.
  2. ifican

    ifican Network Guru Member

    You understand that by running just wep you are effectively not running any protection at all. If it was me i would not sacrifice my network for a single device. If you need to have that device on the network then create an entirely separate unsecure lan and put that device on it. Other then that i have no idea why wep and xp dont mix, but to be honest i am glad it does not work as maybe it will get you to change back to wpa.
  3. HomeITGuy

    HomeITGuy Addicted to LI Member

    If I could use WPA, I would, but the "device" is an entire home automation system.

    And I understand that WEP is very weak, but at least it serves to provide some deterrent to neighbors who might otherwise innocently or curiously wander over to my own network.

    In any case, I didn't come here looking for a lecture ... I had heard that people in this forum were knowledgeable and helpful. And by searching the web, it seems that this problem is fairly widespread, unrecognized, and potentially unsolved.
  4. HennieM

    HennieM Network Guru Member

    What works most of the time, is to delete the defined wireless net, and then redefine it manually from scratch, or let Win Zero Config detect it, and then enter the key(s).
  5. HomeITGuy

    HomeITGuy Addicted to LI Member

    Problem Solved?

    I finally found a posting elsewhere that seemed to do the trick (for now?).

    Hopefully by posting the answer here, I will help some other poor hapless souls.

    The issue appears to be that it's necessary need to turn off the IEEE authentication capability (on by default). The other posting implied this may have something to do with Comcast. I don't understand why, since this is all happening inside my internal network, but indeed, Comcast is my ISP.

    In any case, these steps for getting there may not be exact, according to your version of Windows.

    1. Click the Windows Start button.
    2. Right-click "My Network Places" and select Properties.
    3. Right click on your wireless network icon and select Properties.
    4. Select the Wireless tab.
    5. Select your wireless network in the lower list, and click the Properties button.
    6. Select the Authentication tab.
    7. Uncheck the IEEE checkbox, and click OK.
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