I am attempting to install a new certificate on an Exchange 2010 server. Our current certificate expires today.
I previously tried to import the certificate and some how messed up so I started over but now I am getting an error "Cannot Import Certificate. A certificate with the thumbprint XXXX already exists."
I have checked the certificate store and deleted it but it is still showing this error. Searching on here I attempted to run the command remove-exchangecertificate -thumbprint XXX . But getting an error that the PrivateKeyMissing.