Site security certificate is not trusted [Firefox]

How many times trying to connect to a server to be able to work in the Hosting Panel (cPanel or others), usually through a secure connection https: // we find notices to use like the one shown below.

If we cannot access a secure website from the Firefox browser (the ones that start with https:) will display an error with the title “The secure connection has failed” and a message about the error: This connection is not verified.

Firefox uses certificates from secure websites to ensure that the information is being sent to its recipient and that it cannot be read by intruders.


This connection is not verified

You have asked Firefox to connect securely to cpXX.webempresa.xx but it cannot be confirmed that the connection is secure. Typically, when trying to connect securely, sites present verified information to ensure you’re in the right place. However, the identity of this site cannot be verified.

What should I do?

If you normally access this site without problems, this error may be occurring because someone is trying to impersonate the site, and should not continue.

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Technical details

cpXX.webempresa.xx use an invalid security certificate.
The certificate is not trusted because the issuing certificate is not trusted.
(Error code: sec_error_untrusted_issuer)


First and important don’t be alarmed not to think that something bad is happening on our connection or on the server, since it is a information notice facing a problem of validation of a certificate.

If your level of paranoia is high, chances are you’ll end up clicking Get me out of here! and try to access by other means or just give up access.

However, if you consider that it is only an informative notice and you want to solve it From now on, in this short guide we will show you how easy it is to solve these types of situations in a few minutes.

How do you manage to solve this problem ?, simple, Creating an exception! so that the notice is no longer displayed and the certificate is validated correctly.


This is an error returned by the Firefox browser when accessing a website that requires protocol. https and the issuer certificate is not validated in our browser.

Solving the problem

  1. Copy the full name of the link you are trying to access, for example: cpXX.webempresa.xx: 2083
  2. In your Firefox browser, go to preferences.
  3. Advanced, Certificates, See certificates.
  4. Select the certificate that appears at the beginning (Unknown) that you want to validate.
  5. Click (below) on Add exception.
  6. In Address, after https: // add the copied url cpXX.webempresa.xx: 2083
  7. Click on Get certificate.
  8. Mark the checkbox [ ] Permanently save this exception.
  9. Click on Confirm security exception.

After carrying out the described process, the following accesses to https: //cpXX.webempresa.xx: 2083 would be validated, we would obtain a secure access channel through the protocol https and the message or notice should not reappear unless we clear “all” breadcrumbs including certificates, which is unusual.

In case the certificate was valid, the process would not be necessary, since we would see a warning like the following:

If you want to go deeper into this error or notice “sec_error_untrusted_issuerYou can check the following articles:

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By |2020-05-12T01:09:48+00:00May 12th, 2020|Administración del Hosting|