Beside, in Windows XP SP1 computer, the WPA encrypted wireless network can be connected without error too.
The error only surface on pre-SP2 Windows XP on both WPA and WPA2 protocols, and WPA2 on Windows XP SP2.
WPA2 certification is now mandatory for network devices to be certified by Wi-Fi Alliance as “Wi-Fi CERTIFIED”.
The Windows XP (with or without SP1) system does work properly and connect perfectly to the wireless network if the router, WAP (wireless access point) is configured to enable and use WEP 64-bit/128-bit/225-bit security encryption, which is less secure than WPA2 and WPA.
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.