How To – CAC PIV Auth Instructions Mandated by the DoD, the Army CAC Certificate Reduction and Realignment Plan modifies the certificates on the CAC to streamline authentication functions under one certificate, increasing interoperability across the DoD and other U.S. federal government agencies to seamlessly integrate system access and information sharing. All personnel who possess a CAC issued prior to 24 February 2018 must activate their Personal Identity Verification (PIV) Authentication (PIV-Auth) Certificate no later than 01 July 2019. Failure to comply will result in loss of access to the network, applications, and data. PIV-Auth certificate activation instructions: To activate PIV-Auth certificate on a personal computer follow the instructions given here: Activating your PIV Auth certificate (.pdf) To activate PIV-Auth certificate on a government computer follow the instructions given here: How To-CAC PIV Auth Instructions (.pdf) Users should use Internet Explorer when updating their security certificates at the milConnect website. POC: J6 Service Desk California National Guard 866-CNG-DOIM (264-3646).