when you installing a new letsencrypt ssl for a domain with certbot
# certbot –apache -d mydomain.com
I got “Client with the currently selected authenticator does not support any combination of challenges that will satisfy the CA” error message
As mentioned in the following url, my ubuntu cerbot package from ppa:certbot/certbot repo is outdated.
Solution until we get a package update for certbot:
Stop apache temporarily run the following command when you finish your certification process. Start apache again.
# /etc/init.d/apache2 stop
# certbot –authenticator standalone –installer apache -d mydomain.com
# /etc/init.d/apache2 start
If you are using nginx simply change the installer parameter apache with nginx
Alternatively you can update your certbot with certbot-auto
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