Deploying Your Own Root CA via Group Policy

Posted on November 29, 2009
Filed Under Windows, Windows Server 2003, Windows Server 2008

Although it took some searching, this nugget was quite simple.

One of my clients hasĀ a Linux Certificate Authority and none of the Windows systems would give an invalid or unknown certificate authority error when visiting a company website that used a cert created by the CA.

Get your root certificate ready, then fire up the Group Policy Management Console (or gpmc.msc). Either create a new group policy or use the Default Domain Policy to deploy it to every system.

Right-click the policy of your chosing and select Edit… go to Computer Configuration > (Policies, if you are using Windows 2008 ) > Windows Settings > Security Settings > Public Key Policies > Trusted Root Certification Authorities, right-click and choose Import… and using the import wizard browse over to your root certificate and you are done.

Within a few days most computers on the domain should have the certificate, aside from the stragglers who never seem to be on the network.

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