Let's Encrypt web site security cert warning

[norman]

The root certificate that Let's Encrypt use for the certification path recently expired, meaning that security certificates that were issued using this are now displaying security warnings.

The answer is to force the renewal of the site certificate manually to use the new root certificate.

In a Linux terminal Window type -

certbot certificates

This will show the sites connected with the certificate.

Then try -

sudo certbot renew --force-renewal

or if you have one site -

sudo certbot certonly --force-renew --cert-name sitename.com

or more than one site -

sudo certbot certonly --force-renew -d sitename1.com -d sitename2.com

This should fix the issue.

Norman