Northern Illinois University

Information Technology Services

Cisco Clean Access Agent

Vista users - follow directions below if you get this error:

"Network Error: SSL certificate REV failed [12057]"

  1. Open Internet Explorer
  2. Click on Tools > Internet Options
  3. Click on the Advanced Tab
  4. Scroll down to the Security section
  5. Uncheck "Check for server certificate revocation"
  6. Close Internet Explorer and log out of the Clean Access Agent
  7. Start the Clean Access Agent and log in