I am an Iranian letsencrypt's member.
Can I install and renew automatically free SSL on IIS (.ir web site)?
I have used certbot for linux server before, successfully.
My web server is IIS
The operating system my web server runs on is Windows server
I can login as administrator and have access powershell
Let's Encrypt is a CA and from the moment the EFF took over development of Certbot, does not develop any ACME client. As far as I know, Let's Encrypt does not block the .ir TLD.