For Dedicated Servers & Cloud Servers running Windows
Learn how to install the SSL Starter Wildcard certificate provided by 1&1 IONOS on a Windows server.
Log in to your server using Remote Desktop.
Open IIS Manager by clicking Start > Administrative Tools > Internet Information Services (IIS) Manager
Double-click the computer name at the top-left of the window.
On the right-hand side, scroll down and double-click the Server Certificates icon.
On the top-right of the Actions pane, click the Import link.
In the new window, click the ellipsis (...) button to locate the .pfx file on the server. Enter the password you chose when generating the PFX file into the text box. Also, check the box for Allow this certificate to be exported. When finished, click the OK button.
You will see the certificate added to IIS on the right-hand side. Next, click Sites on the left-hand side.
Double-click the web site that the SSL is for.
On the right-hand side, click the Bindings link.
Click the Add button.
Select https from the Type drop-down box.
Select the IP address from the drop-down box that the domain uses if you plan to install more than one SSL certificate.
From the SSL certificate drop-down box, select the certificate you just added. Optionally, you can choose change the port number for the binding however it is recommended to leave the deafult 443.
Click the OK button when you are finished.
You may now open up a browser and navigate to https://example.com where example.com is the domain or subdomain that the SSL was ordered for and verify the install was successful.