Content blocked because it was not signed by a valid security certificate

Question

When I try to access the application in SharePoint 2013 I get an error message:

Content blocked because it was not signed by a valid security certificate.

I have tried to put the site in trusted sites but without result and also clear ssl certificate, but the issue persists.

Answer 1

From this blog: Fix: Content Was Blocked Because It Was Not Signed By a Valid Security Certificate

1.Prevent IE from checking for certificate revocation.

2.Resetting the security settings of IE.

3.Resolving the Symantec Endpoint Protection Manager with IE conflict (if applicable).

And here is a similar issue: Error: Content was blocked because it was not signed by a valid security certificate.