Hi @aruneshgupta
That is correct, neither the CSR nor any of the CRT files received from the certificate authority will include the private key, hence the imported certificate does not contain the key and cannot be exported.
What you need to do is locate the private key used to sign the CSR. If done in Windows try the following.
To find the private key from a CSR on a Windows host, you need to use the Microsoft Management Console (MMC) tool. Here are the steps to do that:
From your server, go to Start > Run and enter mmc in the text box. Click on the OK button.
From the MMC menu bar, select Console > Add/Remove Snap-in.
Click on the Add button.
Select Certificates from the list of snap-ins and then click on the Add button.
Select the Computer account option.
Click on the Next button.
Select the Local computer (the computer this console is running on) option.
Click on the Finish button.
Click on the Close button on the snap-in list window.
Click on Certificates from the left pane.
Look for a folder called REQUEST or "Certificate Enrollment Request> Certificates Select the private key that you wish to backup.
Once you obtained the private key you need to combine it together with the CRT files into a .pfx file which will now hold both the key and the certificate (and chain).
Hope the above helps.
Best,
Bjorn
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