1. Snapshot/backup your ADFS and ADFS Proxy servers.
  2. Import the new certificate to all servers personal store, in my case I am using a Wildcard Certificate obtained from GoDaddy. *Details can be found here.
  3. Open WIndows Powershell
  4. Get new certificate thumbprint by running the command:

          dir cert:\LocalMachine\My




            *If you are not sure which Thumbprint is your new certificate go to the .crt file and open it.  On the Details page scroll all the way down and view                            thumbprint.

  1. Run Powershell command on Primary ADFS Server: 

            Set-AdfsCertificate -CertificateType Service-Communications -Thumbprint <yourThumbprint>

            Set-AdfsSslCertificate -Thumbprint <yourThumbprint>

  1. On Web application proxys run:

            Set-WebApplicationProxySslCertificate -Thumbprint <yourThumbprint>

  1. Restart ADFS services or server on all servers.