We have a third party we are working with that is running an internal (vpn site to site connection) that is using their own CA. We have been given a .p7b file which we import into Third-Party trusted CA to get it to work properly with our WCF Services. The problem is that for some reason the Certificate keeps getting removed. I believe this is happening from Active Directory. Can anyone tell me how we work around this we need the certificate to stay installed.