I am attempting to replace the Data Store self-signed certificate with my commercial certificate using the Data Store "updatesslcertificate" utility. When I run the utility, I receive the following error: "Error encountered: Machine 'https://<server name>:2443/arcgis/datastoreadmin' returned an error. 'Unable to import certificate'. My certificate is in the .pfx format and was imported into and is being used successfully with Portal and Server so I don't believe there is anything wrong with my commercial certificate. I am not finding anything to troubleshoot this particular issue.