You could test this temporarily by turning off encryption on the wireless router. In any event I am finding that after rebooting the WPA2 code is no longer there and it has reverted back to Open WEP. I also tried the option: Network And Internet -- Add a wireless device to the network but again nothing is found I downloaded this: and nothing seems to have changed. After initially setting up the Win 7 laptop, in the case of the others I was asked for the security code and the connection was duly established. I am now trying to connect a friend's laptop, it is an ageing Toshiba Satellite M70-215 and from what I have been able to gather it is running Service Pack 2 and has only 512 MB RAM. First of all I tried to connect using the built-in wireless, even after updating the driver, no network is found. I then tried installing the supplied Sitecom N adapter, after some problems the network appears but I can't connect, I am told "Windows was unable to find a certificate to log you onto the network" I read several threads that led me to uncheck "Enable IEEE 802.1x authentication for this network" and I actually managed to enter the WPA2 code but this just leads to the message "This connection has limited or no connectivity" and "validating identity". I tried to connect to the LAN using Ethernet (again after updating the driver), although I am apparently connected I can't reach the Internet and can't see what settings might need tweaking.
I recently set up a wireless network for my new Sitecom WL-585 modem router with WPA-2 security and all went according to plan.
I have a Win 7 laptop, Vista laptop, XP laptop, Nokia N95 and Soundbridge all connected.