Windows – How to create a self-signed certificate with .pfx and .cer files

You will need to use openssl.

openssl pkcs12 -export -out domain.name.pfx -inkey domain.name.key -in domain.name.crt

The key file is just a text file with your private key in it.

If you have a root CA and intermediate certs, then include them as well using multiple -in params

openssl pkcs12 -export -out domain.name.pfx -inkey domain.name.key -in domain.name.crt -in intermediate.crt -in rootca.crt

You can install openssl from here: openssl

For localhost only

Simply paste this in your chrome:

chrome://flags/#allow-insecure-localhost

You should see highlighted text saying: Allow invalid certificates for resources loaded from localhost

Click Enable.

-OR-

Try typing: thisisunsafe anywhere on the window and the browser *should* let you visit the page.[link]