Military CAC
The Definitive Source for Everything CAC (Common Access Card) help for your Personal Computer.
At a glance
- Access
- Public
- Last updated
“Last verified” means a LogTool editor checked this entry against its source; “Last updated” is the entry’s own date, carried over when this directory was migrated.
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 9, 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. The site comprises over 120 pages of step-by-step instructions, driver/middleware downloads, and troubleshooting guidance for Windows, macOS, Linux, Chrome OS, and mobile devices, covering installation, error codes, DoD certificate setup, and access to CAC-authenticated systems including Army365, Army Azure Virtual Desktop (AVD), and other service portals. For official, authoritative guidance the DoD Cyber Exchange and each service's IT help desk remain the governing sources.
What it is
The site is a large (120+ pages) 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.