Remove User Encryption and/or siging certificates on Exchange for Mac Outlook users


  • We have a self-hosted Exchange server and we have Users that have smartcard tokens with new Signing and Encryption  certificates installed on the token.

    We can successfully install these certificates using Outlook and for Windows users, Publish to GAL, is successful and works great. The old certificates are removed and replaced with the new certificates.

    However, Outlook on a Mac does not have a Publish to GAL function and therefore we have a problem getting rid of the old certificate. We cannot find these old certificates to remove them manually. The old certificates are not present in Active Directory, so the only other location must be Exchange server. But we cannot find these certificates to delete them.

    Any suggestions?

    Tuesday, October 11, 2016 8:42 AM


  • Please see my post here for more detail:

    Wednesday, October 19, 2016 6:05 AM