802.1X authentication failure on enterprise Wi-Fi

What is 802-1X-AUTH-FAIL?

Cannot connect to corporate or university Wi-Fi that uses 802.1X (RADIUS) authentication. Windows prompts for credentials repeatedly.

Common Causes

• Expired or untrusted certificate on the client
• Wrong EAP type configured in Wi-Fi profile
• Network Policy Server (NPS) rejecting connection

Step-by-Step Fix Guide

• 1
  Import the correct CA certificate from IT department
• 2
  Delete the existing Wi-Fi profile and reconnect, entering the correct credentials
• 3
  Verify the RADIUS server certificate is valid

Commands & Diagnostics