How to decrypt a private key and prepare SSL certificate for IIS installation

Once you have got necessary files.

Encrypted private key and certification file you need to do the following

Decrypt the private key

openssl rsa -in example.encrypted.key -out example.key

Enter passphrase for example.encrypted.key:

Add encrypted key to certificate and create a new certificate with a key already in it to install in IIS

openssl pkcs12 -inkey example.key -in example.crt -export -out example.pfx

You need to provide a password to it.

Once done on Windows Server use run command ->  mmc ->Snap in ->Certificate and Import the certificate or just double click on the certification and add to personal folder under Local Machine.

Many Thanks