Military CAC

Military CAC (militarycac.com) is a widely used, independently maintained help website for installing and troubleshooting a Common Access Card (CAC) reader on personal and government computers. It has been online since November 2007, is developed and personally maintained by retired Army Warrant Officer Michael J. Danberry, and receives no government or DoD funding — it is a private resource, not an official DoD site, though it is well known across the force for CAC troubleshooting.

What it is

The site is a large (100+ page) collection of step-by-step instructions, driver/middleware downloads, and troubleshooting guidance for getting a CAC reader and DoD certificates working on Windows, macOS, Linux, Chrome OS, and mobile devices. It covers common error codes, DoD certificate installation, and access to systems such as military email (Army365) and other CAC-authenticated portals, with content organized by service branch (Army, Navy, Air Force, Marine Corps, Coast Guard) and for DoD civilians.

Who operates it

An individual, Michael J. Danberry (retired U.S. Army, March 2015), operating independently — not a government agency. The site states it takes no funds from any government or DoD entity, relying instead on personal funds and reader donations to cover webhosting and domain costs. Danberry has separately worked as a contractor for the Army Enterprise Service Desk-Worldwide, but the site states that role has no affiliation with militarycac.com.

Access

Public website, free to use, no account or CAC required to read the guidance itself (a CAC/reader is of course required for the DoD systems the guidance helps you access). The site's own "Questions" page also aggregates the phone numbers of official service enterprise help desks (Army, Navy/NMCI, Air Force, Marine Corps) for users who need direct government support rather than self-help instructions — those numbers belong to the respective services, not to militarycac.com.

How logisticians use it

Logisticians, like other DoD personnel, reference the site to resolve CAC reader, middleware, and certificate problems so they can log in to the authenticated logistics and email systems they depend on, especially from home or non-standard computers. For official, authoritative guidance the DoD Cyber Exchange and each service's IT help desk remain the governing sources.

Related systems

Relevant to accessing nearly every CAC-gated system in this directory; for official CAC/PKI policy and guidance, see the DoD Cyber Exchange.