Core Issue
A client certificate for the user account has not been installed.
Resolution
If you see a message indicating that Windows XP is failing to find a certificate to authenticate to the network, verify that you have installed a client certificate for the user account.
See chapter 6 of the (PDF) Extensible Authentication Protocol Transport Layer Security Deployment Guide for Wireless LAN Networks for further EAP-Transport Layer Security (EAP-TLS) troubleshooting tips.
Problem Type
Client / Device cannot authenticate
Install
Error message
Products
WLAN adapters (wireless card) / ACU (Aironet Client Utility)
Security Options
EAP
Client OS Type
Windows XP
Client OS Errors, Warnings, Statistics and Log Messages
Failed to find authentication certificate
