How do you fix validating identity
Here’s how to connect to your wireless router if you are getting this message.First, click on the wireless icon in your taskbar and under Related Tasks, choose Change advanced settings.In the next window click on the "Authentication" tab, Make sure "Enable IEEE 802.1x...." checkbox is UN-Checked, the rest of this window should be greyed out.If your network is Encrypted go on to step 6 otherwise Click ok and try to connect to your network again.If, for any reason, the connection turns to Manual, in order to re-connect, just bring up the available Wireless Network Connection window by double-clicking its icon in the tray bar , select eduroam and click on Connect.In order to configure the connection back to Automatic, edit the eduroam profile, go to the Connection tab and check Connect when this network is in range: Figure 14: Setting Automatic connection  = If the Wireless Network Connection icon is not present, this may be due to the wireless network manager of your vendor's card taking over from Windows' built-in one (Wireless Zero Configuration).I'd start by reviewing the event logs on your IAS server for reasoning as to why it's not authenticating your client.
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! I configured the IAS policy to grant access to Domain Computers, Authentication is set to PEAP and uses a private cert issued by our CA, the other profile settings are all default.