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The following URLs describe a new feature of Windows Certificate server is the ability to install multiple instances on the same server.

Quote: "Multiple Certificate Server instances on a single physical server"

Quote: "Multiple instances of the Certificate Enrollment Web Service can be installed on a single computer in order to support multiple CAs."

Question How can I actually implement multiple CA instances on a Windows 2008R2 server?

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up vote 2 down vote accepted

I didn't see anything in either of those URLs to indicate you can have multiple CAs on a single OS install (granted, I only skimmed). You can have multiple CA related roles (web enrollment, ocsp, policy server, etc). But I don't think you can have more than one actual Certificate Authority.

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