Smart Card Reader Not Reading Cac -

If you need help resolving a specific error code during this process, let me know: Your (Windows 10, Windows 11, macOS) The exact error message displayed on your screen The model of your smart card reader

Cached identity tokens can conflict with new login attempts. Clear your cache, cookies, and hosted app data. smart card reader not reading cac

Right-click the service, select , and change the Startup type to Automatic . Update Middleware If you need help resolving a specific error

A Common Access Card (CAC) inserted into a smart card reader is not detected, fails to authenticate, or produces errors such as “No reader found,” “Smart card not recognized,” or “Invalid certificate.” This prevents access to DoD networks, email, or PKI-authenticated systems. Update Middleware A Common Access Card (CAC) inserted

Insert a different CAC into the reader, or try your CAC in a known-working reader. This isolates a dead card from a dead reader. 💾 Step 2: Resolve Driver and Middleware Issues