Click on the Authentication tab and now uncheck the Enable IEEE 802.1x authentication for this network box.
If the box was checked, then that was why you were getting the “unable to find a certificate to log you on to the network” message because Windows is looking for one, but your wireless router is not setup for certificate security. Once I unchecked that box and tried to reconnect to the wireless network, everything worked fine!
If you are telling me that you are using WPA with a shared key on your router, then you are using WPA - Personal. You want to make sure you are using that option on your computer. You do not want to make sure you are not using WPA-EAP. This version requires a certificate server and a matching certificate on yout computer to connect to the wireless.I'd start by reviewing the event logs on your IAS server for reasoning as to why it's not authenticating your client.I recently bought a new Linksys wireless router and after setting it up with basic WEP security, I tried to logon from my laptop and was successful! So then I tried to connect from my desktop computer that has a wireless USB adapter attached to it and I ended up getting this error message: Fabulous! I checked my settings on the wireless router to make sure I didn’t accidentally setup certificate security, but found no such thing.Are you receiving an endless "Validating Identity" connection status when trying to connect to a wireless network.In a few simple steps you can bypass Windows Validation, and the resulting "Limited or No Connectivity" issue on an encrypted connection.As of recently, she was able to use this computer to connect to a neighbor's/friend's secured wireless netowork and another neighbor's/friend's unsecured wireless network.What's really strange, now I noticed, that this problem is occurring with any Network in range on the list. Without actually looking at the system, it is hard to tell exactly the problem but here are 2 general things to explore: Did you by chance install any of the Comcast utilities on her machine?When setting up WPA you will see the option for either a radius server (Enterprise, and you see this in the corporate environment) or a place to enter a passphrase (Pre Shared Key, PSK).As long as you use the same options for both, you should be fine. WPA-TKIP or WPA-PSK is typically the names for personal WPA. My problem was not actually answered by the TP-LINK technical support staff.Now click on the Wireless Networks tab and select the network in the list at the bottom.Click on Properties once you select the wireless network that is having problems.