The beginning of each year, lately seems to be the time when I have to update my scripts that control the automatic management of SSL certificates. I started three years ago by learning first about Let's Encrypt certificates, and how they could have solved my needs for automatically renew (for free!) my SSL certificates. At the time I started to use ACMESharp: it seemed to be a great fit as it worked in powershell and had all the features I needed; but lately, it has lagged behind, and the move the ACME v2 was the final nail in its coffin.
The original post of this article is here: New year, new Let’s Encrypt automation: goodbye ACMEsharp, hello Posh-ACME!