Using letencrypt and certbot on cygwin

To use certbot on Cygwin, install the python3-pip package using the setup from Then install the certbot python package by running

pip3 install certbot

You can set up auto renewal by setting up a Windows Task to run every day with the action.

Program: C:\cygwin64\bin\bash.exe
Add arguments: -c "certbot renew -n"

Your certificate is store in C:\cygwin64\etc\letsencrypt\archive\