EM 12c: Enterprise Manager 12c Cloud Control Login Page does not Appear after Certificate Update, still Showing Error: This Connection is Untrusted
Last updated on JULY 08, 2017
Applies to:Enterprise Manager Base Platform - Version 220.127.116.11.0 to 18.104.22.168.0 [Release 12.1]
Information in this document applies to any platform.
Browser login to the EM 12c Console is prevented by a browser security alert (the following example is for the Firefox browser, but similar messages appear using alternative browsers, such as Internet Explorer) :
You have asked Firefox to connect securely to <EM_host_name>:<EM_https_port>, but we can't confirm that your connection is secure.
Normally, when you try to connect securely, sites will present trusted identification to prove that you are going to the right place. However, this site's identity can't be verified.
What Should I Do?
If you usually connect to this site without problems, this error could mean that someone is trying to impersonate the site, and you shouldn't continue.
<EM_host_name>:<EM_https_port> uses an invalid security certificate.
The certificate is not trusted because the issuer certificate is unknown.
The server might not be sending the appropriate intermediate certificates.
An additional root certificate may need to be imported.
(Error code: sec_error_unknown_issuer)
One option for a site with known confidence is to tell Firefox to start trusting this site's identification. Even if you trust the site, this error could mean that there is interference with your connection.
Don't add an exception unless you know there's a good reason why this site doesn't use trusted identification.
This is a normal response and happens because a demo ssl certificate is being used. This certificate comes with the EM 12c installation.
Normally selecting Add Exception removes this warning permanently, since the suspect certificate is stored in the browser from that moment on.
But this solution does not work with the current example, since the browser session loops on the warning page and the EM 12c console login page never appears.
This happens on Windows clients only.
Recent Microsoft security updates have been installed on the client computer.
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