Export your SSL/TLS certificate from one Microsoft server to import on another Microsoft server
Windows servers use .pfx files containing the public key (SSL certificate file) and the associated private key file. DigiCert provides your SSL certificate file (public key file). You use your server to generate the associated private key file as part of the CSR.
You need public and private keys for an SSL certificate to function. If you need to transfer your SSL certificates from one server to another, export them as a .pfx file.
To create a .pfx file, the SSL certificate and its corresponding private key must be on the same computer/workstation. You may need to import the certificate to the computer where the associated private key is stored (e.g., the laptop/desktop computer where you created the CSR) before successfully exporting it as a .pfx file.
For help importing the certificate, see SSL Certificate Importing Instructions: DigiCert Certificate Utility.
These instructions explain how to export an installed SSL certificate from a Microsoft server and its corresponding private key as a .pfx file for importing to another server. If you need your SSL Certificate in Apache .key format, please see Export a Windows SSL Certificate to an Apache Server (PEM Format).
|If the Yes, export the private key option is grayed out (unusable), the certificate's matching private key is not on that computer. This prevents you from creating the .pfx certificate file.
To fix this problem, import the certificate to the same machine where the certificate's CSR was created. See Export Prerequisite.
To import the certificate to your server using the DigiCert Certificate Utility, follow the instructions for that particular server type:
After importing your certificate onto the new server, if you run into certificate trust errors, try repairing them using DigiCert® Certificate Utility for Windows. If this does not fix the errors, contact support.
To verify you've installed the certificate correctly, use our DigiCert® SSL Installation Diagnostics Tool. In the Server Address box, enter the DNS name of the site (e.g., example.com) that you secured with your SSL certificate.