The below guide has been tested on MS Windows XP Professional and is based on Windows' default wireless configuration tool (Wireless Zero Configuration).
Screenshots are taken from Professional version thus may slightly differ from other versions (e.g.
I added the AP as a client with and have tried using both RADIUS Standard and Cisco as the RADIUS type.
Internet connection status validating identity
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).
By default, XP will re-authenticate with the user credential after the user logs-on (there is no way to do computer-only with XP, I believe).
I'd start by reviewing the event logs on your IAS server for reasoning as to why it's not authenticating your client.
First, click on the wireless icon in your taskbar and under Related Tasks, choose Change advanced settings.
Now click on the Wireless Networks tab and select the network in the list at the bottom.
Home Edition, etc.): You have now succesfully configured Windows XP to connect to eduroam network.
In order to connect to eduroam network in future, simply bring up Wireless Network Connection window by double-clicking its icon in the tray bar , select eduroam network and click on Connect.
For information about how to troubleshoot wireless connectivity on wireless networks that do not use 802.1X authentication, see Troubleshooting Microsoft Windows XP-based Wireless Networks in the Small Office or Home Office.
Troubleshooting Tools in Windows Wireless AP Troubleshooting Tools IAS Troubleshooting Tools Troubleshooting IAS Authentication and Authorization Summary Related Links The tools for troubleshooting wireless connections in Windows XP and Windows Server 2003 are the Network Connections folder and tracing.
Are you receiving an endless "Validating Identity" connection status when trying to connect to a wireless network.