Middleware enables the DoD PKI certificates stored on your Common Access Card (CAC) to interface with the many Public Key Enabled (PKE) applications on your system and across the Internet. Two of the most common middleware applications used across DoD are ActivClient and Spyrus.

**Note: This is not a PIN reset. If a user’s card is locked due to invalid PIN entry attempts, the user will need to visit a DEERS/RAPIDS facility to have the PIN reset performed.