CAC troubleshooting
If the CAC window fails to connect or you never see a certificate prompt, work through this checklist — especially on a computer you haven't signed in from before:
- CAC inserted and reader detectedReinsert the card and check the reader light.
- CAC middleware installed on this computerThe browser reads your CAC certificates from the operating-system certificate store. On Windows, open certmgr.msc → Personal → Certificates; if your certificates are missing, install ActivClient or the smart-card minidriver.
- Restart the browser after inserting your CACMost browsers only read smart-card certificates present at launch.
- VPN / network pathEnsure your VPN or network gateway is connected and allows the CAC subdomains of this site.