I have a cloud service (classic) I inherited the management of. It has an expired certificate. I acquired a new certificate and uploaded it under the service settings for certificates. The certificate was accepted and shows in the list of certificates under the cloud service. The service is still using the expired certificate as indicated by a browser. I tried changing the certificate thumbprint to the new one under configuration settings and get this error: "Failed to save configuration settings for slot 'Production'. Error: ajaxExtended call failed." The service fails to start until I restore the certificate thumbprint back to the expired one. How do I change the service to use the new certificate?