Change PFX to PEM on Windows

cmd

Install OpenSSL from here:

https://slproweb.com/products/Win32OpenSSL.html

Copy the PFX file to the directory you want the .pem files in. Open a command prompt as admin, change to the directory and run these commands:

To export the private key without a passphrase or password.

C:\OpenSSL-Win32\bin\openssl pkcs12 -in adams14wildcard.pfx -nocerts -nodes -out serverkey.pem

To export the Certificate

C:\OpenSSL-Win32\bin\openssl pkcs12 -in adams14wildcard.pfx -clcerts -nokeys -out servercert.pem

Restart whatever service (in this case it was Tenable Nessus).