All you need to do is to download the newest release, copy it to your web server, unzip it and run it.
--A simple interface to create and install certificates on IIS server
--Compatible with all popular ACME service providers, including Let’s Encrypt, ZeroSSL, DigiCert, Sectigo, etc...
--Automatically creates a scheduled task to renew certificates.
--Get certificates with wildcards (*.example.com) as well.
This is a ACMEv2 client for Windows that aims to be very simple to start with, but powerful enough to grow into almost every scenario.