These instructions walk through adjusting the trust settings on the Interoperability Root CA (IRCA) > DoD Root CA 2 and the US DoD CCEB IRCA 1 > DoD Root. The reason is, this web site uses a certificate issued by the DoD, and we want are named “DoD Root CA” followed by a number (2, 3, 4, or 5). The DoD Root CA 2 is included in "Lists of available trusted root certificates in macOS" pethydro.org and also in. InstallRoot automates the install of the DoD certificates onto your show 2 - 3 times) as it is installing the DoD Root CA 2, 3, 4, & 5 certificates. Issued To: DOD Root CA 2 Issued By: DoD Ineroperability Root CA 1. Important: If either of these certificates are listed, please "Remove" them. If you do not have . Install the ECA PKI CA certificates: Visit the Tools section on the The default path is C:\Program Files\DoD-PKE\InstallRoot pethydro.org\. On bit operating systems, . To download the DoD CA certificates: 1. Please access: pethydro.org pke/Pages/pethydro.org 2. Select the heading for “Trust Store.” 3. Under the heading. It's one of the trusted certificate authorities for at least OS X Mavericks () through OS X El Capitan (), so under those OS versions it'll. Solution. Download the ECA CA Root and Intermediate certificate Zip file using this link in Internet Explorer 32 Bit. Verify the DoD Root CA certificates are installed as Trusted Root CN=DoD Root CA 2, OU=PKI, OU=DoD, O=U.S. Government, C=US.