How To: Get LetsEncrypt working with IIS manually

Server
4

I used https://github.com/Lone-Coder/letsencrypt-win-simple with the following web.config in the acme-challenge directory to avoid a 404.17 IIS error (‘The requested content appears to be script’) blocking download of the challenge:

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
    <system.webServer>
        <staticContent>
            <mimeMap fileExtension="." mimeType="text/plain" />
        </staticContent>
    </system.webServer>
</configuration>