Wireles with WPA doesn't work on Vista

I tried to configure manually and also using the wizard which comes with the software installed for the CD which comes with that PCI wireless adaptor.

Using this wizard works perfectly when I boot using Windows XP. Also, If I disable the security on the router (open connection, instead of WPA or WEP) then it works perfectly on Vista.

Trying disabling UAC and then try connecting to your router.

That doesn't seem to make sense, as I can connect to router without disabling UAC if there isn't any security enabled on router.

Make sure you have the latest drivers installed for your wireless card.

Try, try again.

Retype the passphrase.  That's worked for me more than once!

Yes, I downloaded from internet. Also, there isn't any error when installed (just the typical warning that "allos to execute"..

Could it be because I haven't any Service Pack installed ? Or maybe because it's the 64 bits version ?

Thank you.

Just in case it helps: here is the result of the Windows Vista log events:

Helper Class (L2Sec Helper Class) Event:

For complete information about this session see the Wireless Diagnostic Informational Event.

Helper Class: Layer2 Security
 Initialize Status: Success

Result of diagnosis: Problem found

Root cause:
Windows cannot connect to "WifiGabet"
Wireless authentication failed because of a timeout.

Detailed root cause:
Layer 2 security key exchange did not generate multicast keys before timeout

Repair option:
View available wireless networks
You can then try connecting to "WifiGabet" again or try connecting to a different network.
If you own or set up this network, reset your wireless router or access point and try connecting again.

Information for connection being diagnosed
 Interface GUID: {dbb8d990-0876-40ca-ad47-ebc52d807287}
 Interface name: CN&C 802.11b/g Wireless Adapter
 Interface type: Native WiFi
 Profile: Discovery connection
 SSID: WifiGabet
 SSID length: 9
 Connection mode: Infra
 Security enabled: Yes
 Connection ID: 3
 Security settings provided by hardware manufacturer (IHV): No
 Profile matches network requirements: Yes
 Pre-Association and association status: Success
 Security and Authentication:
  Configured security type: Wireless Protected Access with pre-shared keys (WPA-PSK)
  Configured Encryption type: TKIP
  Security connect status: Fail 0x00048005
  Number of security packets received: 2
  Number of security packets sent: 2
  802.1X protocol: No
  Key exchange initiated: Yes
   Unicast keys received: Yes
   Multicast keys received: No


Event Verbosity:0

Hi !
Setup the connection in "manual" way using Windows interface and disable TKIP (actualy enabled in Vista) .

I'm not sure if I understood you. My router is configured using TKIP mode, so I need to configure TKIP mode on Vista I'm sure TKIP on the router is working as I have another computer (from which I'm writing these lines) configured with TKIP. Also, if I start the other computer (the computer which fails)  booting with Windows XP instead of Vista, it works perfectly with TKIP.

So I suspect there is a driver incompatibility with Windows Vista, but I don't know how to solve. Can you help me ?

Unfortunately my router seems not supporting WPA2 neither AES. Just WPA-PSK with server radious and without server (which is the actual configuration).

Te router is a 3com 3CRWDR100Y-72

There is spanish version ( the final "Y" mean spanish; the english version have an "A" ).
You can upgrade the firmware to 2.06T13 from here :
http://www.3com.com/products/en_US/result.jsp?selected=6&sort=effdt&sku=3CRWDR100A-72&order=desc  . This is the latest version.
Some instructions in spanish here : http://www.adslzone.net/tutorial-42.12.html

Thank you for your answer, gnegrota. You are helping me so much.

I installed the new drivers, but unfortunattely there is no option to put other configuration than TKIP on WPA-PSK.

Do you have any other idea ?

No problem, retry to define again the connection fron Vista box. Anyway, as I understand, you have Home edition (right ?!), but you could be able to have various encription levels to connect .
Let me know.

n.b. From LOG, seems that Vista are waiting for Multicast Key exchange and the router are not send it. Lower the firewall level in 3COM, at first .

I'm using Windows Vista Ultimate 64 bits (without any service pack).

I disabled the firewall on router and also the Windows Firewall; but the same happens. I've also tryed to uncheck the "block icmp" on advanced settings from the router, and also enable the universal PnP. But neither of these actions seems to make the connection working on Windows Vista. :(

Another point : in DHCP section in router, do you have something like "enabled IGMP v2 Multicast " ? Maybe in another place ? ( just 2 not make me zapping in manuals :)))))             )
  If it is, enable it !!!

btw, icmp and uPnP have nothing 2 do with . Vista are "handshake" with router but no connection are made. That's all !

Question : Do you have an WGLDUC USB WiFi adapter ?
:D

as you said, it seems a problem with Vista. I configured router for using WEP-128 bits. I know this is not as secure, but for now it seems to be the only option for connecting from Vista.

Thank you very much for your help.

Perhaps this will help:

Older devices require that you tell them whether you're using WPA-PSK WPA Personal WPA2-PSK WPA2-Personal, etc. etc.

Later computer interfaces seem to just know the mode the access point is using and just ask for the passphrase.  

If the router is only capable of WPA then that's what you have to use - in whichever flavor of that protocol it can be set to use.  Then the clients have to match.  There are so many different client interfaces that it would only be a guess to even try to tell you step by step how to get it set up on the client / the Vista.

Now I tried with a newer router, which acceptx WPA2-PSK with AES, and it works perfectly.

So my conclusion is that Windows Vista doesn't handle well with WPA-PSK with TKIP.

Thank you, gplana ! Sorry for not-happyend ... We'll keep the hope for Windows 7 :D !
Have a nice day !