Can ISA Server handle these multiple common names?
No, ISA Server will only reference the first common name in the certificate, and does not support multiple names. I am trying to request a server certificate from an internal enterprise CA using the Certificates Microsoft Management Console (MMC) snap-in on the ISA Server computer, and I receive the following error: The certificate request failed because of one of the following conditions: the certificate request was submitted to a Certification Authority (CA) that was not started: you do not have the permissions to request certificates from the available CAs . The issue occurs even when the CA is started and there are sufficient permissions. By default, ISA Server enforces strict remote procedure call (RPC) compliance on all firewall rules. To request a certificate for the ISA Server computer, you must modify firewall policy rules.