SharePoint sites displaying “TLS Security Settings” error

Question

I have a SP2013 on-prem Farm with 3 web applications and multiple site collections

All the site collections in the farm display the below error:

""Cant connect securely to this page" This might be because the site uses outdated or unsafe TLS security settings. If this keeps happening try contacting the website's owner."

Also this error is displayed for all the users.

What could be the issue and how to make the site working?

Answer 1

SSL certificates for the SharePoint URLs have got expired and after updating the new certificate, sites are working fine now.