How to Install Your SSL Certificate on a Microsoft Exchange 2013 or 2016 Web Server

Before installing your SSL certificate you will need to install the associated Intermediate Certificate.

Please copy the Intermediate Certificate from the email also containing your SSL certificate and paste it into a simple text editor such as Notepad.

Save it as intermediate.cer on your desktop and follow the instructions below: 

1. Open MMC
   
2. Select File. Click Add/Remove Snap In 
   
3. Click Add
   
4. Select certificates. Click Add
   
5. Select Local Computer. Click Finish. Clik Close and then OK
   
6. Select certificates. Select Intermediate Certification Authorities and then certificates
   

Right-click certificates. Select All-Tasks. Click ImportThe Import Wizard will start. Follow the instructions to import the Intermediate Certificate and close MMC.

Now it is time to install your SSL certificate:

1. Copy the SSL certificate from the email and save this as your_domain_name.cer
   
2. Copy the your_domain_name.cer file to your Exchange 2016 server’s network share folder (where you saved the CSR)
   
3. Access the Exchange Admin Center (EAC) by opening a browser and browsing to the URL of your server (e.g., https://localhost/ecp)
   
4. On the Exchange Admin Center credentials page, enter your Domain/user name and Password and then click Sign In
   
5. In the EAC, in the sidebar menu on the left, click Servers and then in the menu at the top of the page, click Certificates
   
6. On the Certificates page, in the center pane, select your certificate request and then in the certificate request details pane to the right, under Status, click the Complete link. Note: Certificate request are listed by their friendly names
   
7. In the complete pending request wizard, under *File to import, enter the UNC path to where your SSL certificate file is located (e.g., \\example\certificates\your_domain_name.cer) and then click OK
   
8. The certificate should be successfully installed on your Exchange 2016 server, and the status of your certificate request should now be Valid
   
9. On the Certificates page, in the center pane, select the SSL certificate you just installed and then click “?” (pencil)
   
10. In the ‘certificate’ window, click Services
    
11. Next, check all the services for which you want to enable your SSL certificate and then click Save

 
Your SSL certificate should now be enabled for the services you selected on your Exchange 2016 server.