| Symptom | Likely Fix | |---------|-------------| | “No reader found” | Try a different USB port or a different CAC reader | | “No certificates” | Card chip may be dirty – gently clean with a soft cloth | | Works on other computer | Your OS needs updates (Windows Update / macOS update) | | Never worked before | Your agency may require a specific middleware (e.g., ActivClient) |
Computers not on the Government Furnished Equipment (GFE) image often lack the necessary root certificates to trust the CAC. cac reader not working
It can be frustrating when your suddenly stops working, especially when you need to access secure portals for work or military service. Whether you’re on Windows or Mac, troubleshooting often comes down to driver conflicts, security settings, or registry errors. 1. Check Physical Connections & Detection | Symptom | Likely Fix | |---------|-------------| |