I am trying to rename file from cer to pem because I am trying to integrate Zscaler with our Azure AD and the people on the Zscaler side specifically asked for the pem extension in the file name.

I tried to just F2 on the filename and change it to Example.pem, but it just changes the filename to Example.pem.cer.

I also tried to download Git with VS Code and use openSSL, but I am very green with that stuff and couldn't get it to work with what I was finding on other questions like this. Kept getting error saying "Unknown Parameters"

I am on Windows 11 if that helps.