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i can see the wireless network listed in "Wireless Network Connection". When I click on connect it asks me for the key. I type the key... and they it cannot connect. Any idea why? I am able to connect from my Windows 7 desktop, but not from either of my XP machines. The network is encrypted with WEP 64bit

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Here is something weird. I've unprotected the wireless network (no emcryption) and still I cannot connect from my laptop. –  Nestor Nov 10 '09 at 22:14
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2 Answers

up vote 1 down vote accepted

Two ideas:

  1. Problem with XP driver for the wireless card: Try to install the latest version from the manufacturer's site (not Windows Update).
  2. A security setting on the router is blocking the connection: Logon to the router and verify all filters or security settings.
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1 is not the issue, b/c i can connect to other wireless networks from the same computer. I've checked 2... but I don't see any special filter (that would apply to this computer and not to my w7 computer) –  Nestor Nov 10 '09 at 20:39
    
Any security settings? Mac list restrictions? Nothing? –  harrymc Nov 10 '09 at 20:47
    
no Mac list restrictions. No special security settings. Could it be that XP is not compatible with WEP 64bit? or something like that? –  Nestor Nov 10 '09 at 21:30
    
Easy enough to test: I know from personal experience that XP works with WEP128. Did you perhaps get included with the wireless cards any connection software? –  harrymc Nov 10 '09 at 21:37
    
No connection software (that I know of). The router is the Actiontech modem that Verizon Fios gives with their package. –  Nestor Nov 10 '09 at 21:58
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Is that a hexadecimal key, or a passphrase?

When using a passphrase then, according to Choosing a password for networks that use Wired Equivalent Privacy (WEP):

Choosing and using a WEP password can be a challenge, because WEP is an older security protocol that was developed before members of the Wi-Fi Alliance had agreed on a uniform way to treat passwords. The result is that a WEP password may not work for all computers in a multiplatform environment.

[..]

  • For a 40 bit WEP network, always choose a 5-character password.

  • For a 128 bit WEP network, always choose a 13-character password.

[..]

Products that allow plain language (ASCII) password entry may not force the network administrator to create 5- or 13-character passwords that would result in the required 40 (5*8) and 104 (13*8) bit-length passwords. Instead, they use a "hashing" routine to convert an odd-length password to the correct bit length. The multiplatform issue arises when the hashing results of products from two different manufacturers don't match each other. The resulting "network equivalent passwords," which are always given in hexadecimal format, are different.

I don't know what to use for a 64 bit network then, but maybe you can use a hexadecimal key instead?

(And, like you probably know: WEP is old and insecure. Use WPA2 if possible.)

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I was using an hexadecimal key. Just to try I switched to ASCII and used a 5-character password.. but it didnt connect either. –  Nestor Nov 10 '09 at 22:05
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