SSL installation in IIS 10 requires one certificate file with the .p7b (or .cer) file extension. You may either download the issued certificate in the email delivered by Comodo (now Sectigo) or download it in your SSLs.com account following these instructions.
In order to install the certificate, please follow the steps below.
- Press Win + R and type “inetmgr” in the appeared window to run the Internet Information Services (IIS) Manager.
- On the IIS Manager home page, locate the “Server Certificates” icon and double-click it:
- Locate the “Actions” panel on the right side and click “Complete Certificate Request”:
4. In the “Specify Certificate Authority Response” window, perform the actions below.
a) In the “File name containing the certification authority’s response” field, browse the file system to select your .p7b (or .cer) certificate.
b) In the “Friendly name” field, specify any name that will help you to identify the certificate among other files. It is best to submit the actual domain name of the certificate.
c) In the “Select a certificate store for the new certificate” field, leave the default value “Personal”.
5. Click “OK” to import the certificate to the server storage.
6. Once the import is completed, in the “Server Certificates” window, you will see a new entry associated with the imported certificate:
7. Assign the certificate to your website by expanding the “Sites” subsection in the “Connections” menu on the left and select the corresponding site. Then, in the “Actions” panel on the right side, locate the “Edit Site” menu and select the “Bindings” option:
8. On the right side of the “Site Bindings” window, click “Add”:
9. In the “Add Site Binding” window, modify the fields as below:
a) In the “Type” field, select “https”.
b) In the “IP address” field, select your website’s IP address or “All Unassigned”.
c) In the “Port” field, specify “443” (default).
d) In the “SSL certificate” field, select the previously imported certificate, which can be identified by the friendly name:
NOTE: The “Require Server Name Indication” box needs to be checked if there are multiple SSL certificates on the server.
10. Click “OK” in order for the new “https” entry to appear in the “Site Bindings” window:
That’s all - the certificate should now be installed and the website should be accessible via HTTPS.
The SSL installation status can be checked online via the SSL checker at https://decoder.link/sslchecker.