When I visit udemy.com in Safari, I get this error:
Safari can't open the page https://www.udemy.com
because it can't establish a secure connection to the server.
In Chrome, it shows this:
Your connection is not private.
Attackers might be trying to steal your information from www.udemy.com
(for example, passwords, messages, or credit cards). NET::ERR_CERT_REVOKED
This happens on one specific Macbook. My iMac and iPad on the same network have no problem. I connected the Macbook to my cell network and same issue.
What would cause this on one computer? I've cleared cache/cookies in Safari and also reset the DNS cache. No difference.