If you uninstall, delete, or replace a certificate on Mobile Device Manager (MDM) Device Management Server in the company network, you must remove the certificate from MDM Gateway Server and then install a new certificate.
To manually remove a
certificate
- 
Open Internet Information Services (IIS) Manager. Expand the tree in the navigation pane, right-click Gateway Management Web site, and then select Properties.
 - 
On the Propertiespage, choose the Directory Securitytab. In the Secure Communicationsbox, choose Server Certificate.
 - 
The Web Server Certificate Wizardappears. Choose Nextto continue to the Modify the Current Certificate Assignmentpage.
 - 
Select Remove the current certificate, and then choose Next.
 - 
The Remove a Certificatepage appears. Choose Next, and then choose Finish.
 
See Also