DoD Common Access Cards provide secure authentication for military and civilian personnel. Understanding CAC setup, troubleshooting, and security prevents access problems.

Quick Answer: Keep CAC certificates current, use approved card readers, and follow proper PIN procedures. Most access problems stem from expired certificates or browser configuration issues.

CAC Setup Requirements

Install DoD root certificates before attempting CAC login. Use approved card readers with current drivers. Configure browsers to recognize CAC certificates properly.

Common Problems

Expired certificates prevent access until renewed. Locked PINs require reset at RAPIDS site. Browser updates sometimes break CAC functionality requiring reconfiguration.

Security Best Practices

Never share PIN or leave CAC unattended. Report lost cards immediately. Use CAC for authorized purposes only following DoD security policies.

Recommended CAC Readers

We recommend these verified CAC card readers that work reliably with DoD systems:

Note: Links contain affiliate codes. We may earn a commission from purchases.