Best Way To Troubleshoot Certificate Problems On Secure websites

 

Best Way To Troubleshoot Certificate Problems On Secure Websites


On locales that ought to be protected (their URL begins with "http s ://"), Firefox should confirm that the site's authentication is legitimate. In the event that the authentication can't be confirmed, Firefox will disengage from the site and show the mistake message "Warning: Potential Security Risk". By tapping the button Advanced you can check the specific type of certificate error that Firefox has encountered.

This article explains why the SEC_ERROR_UNKNOWN_ISSUER, MOZILLA_PKIX_ERROR_MITM_DETECTED, or ERROR_SELF_SIGNED_CERT errors are displayed when trying to visit websites, and how to fix the problem.

What does this error mean?


During a solid association, the site should give a testament gave by a confided in certificate power to guarantee that the client is associated with the ideal site and the association is encoded. In the event that a page shows up with the blunder "Advance notice: Potential Security Risk" and subsequent to squeezing a button Advanced


error code SEC_ERROR_UNKNOWN_ISSUER or MOZILLA_PKIX_ERROR_MITM_DETECTED is displayed, it means that the certificate provided was issued by a certification authority that is unknown to Firefox - and therefore cannot be trusted by default.

What does this error mean



Take a Look at this: the server you are connected to is using a security certificate that cannot be verified


The error occurs on many encrypted pages

If this problem occurs on many unrelated websites, something on your system or network is hijacking your connections and injecting certificates in a way that is not trusted by Firefox. The most common causes include scanning encrypted connections with security software or eavesdropping by malware, replacing legitimate website certificates with their own certificates. Specifically, the error code MOZILLA_PKIX_ERROR_MITM_DETECTED indicates that Firefox has detected a connection hijack.

Antivirus programs

Third-party antivirus software can interfere with secure Firefox connections.

We recommend that you uninstall third-party software and use security software provided by Microsoft for Windows:

  • Windows 8 and Windows 10 - Windows Defender ( built-in )

If you do not want to uninstall third party software, you can try reinstalling it, which may put the correct certificates back into the Firefox trust store.

Here are some alternatives you can try:

Avast / AVG

In Avast or AVG security products, you can disable interception of secure connections:

  1. Open the dashboard of your Avast or AVG applications.
  2. Go to Menu and click Settings > Protection > Main Shields
  3. Scroll down to the Adjust protection settings section and select Web Shield .
  4. Deselect the Enable HTTPS Scanning checkbox and confirm by pressing the buttonOKAY.


    In older versions of this software, you can change this option via Menu > Settings > Components and pressing the buttonCustomizenext to the Web Shield menu .


Bitdefender

In Bitdefender security products, you can disable interception of secure connections:

  1. Open the navigation panel of the Bitdefender application.
  2. Go to Protection and in the Online Threat Prevention section , click Settings .
  3. Deselect the checkbox for Scanning encrypted websites .
    In older versions of Bitdefender, you will find this option in Modules > Network Protection > SSL Scanning

This setting cannot be controlled in Bitdefender Antivirus Free. Instead, you can try to repair or remove the program when you have problems accessing secure websites.

For Bitdefender corporate products, go to the official Bitdefender support site (in English).

Bullguard

In BullGuard security products, you can disable secure call interception for specific, popular websites such as Google, Yahoo and Facebook:

  1. Open the BullGuard dashboard.
  2. Click Settings and enable Advanced view in the top right corner of the panel.
  3. Go to Antivirus > Safe browsing .
  4. Deselect Show safe results for those sites that display an error message.

ESET

In ESET security products, you can try to disable and re-enable SSL / TLS protocol filtering, or disable interception of secure connections in general, as instructed on the official ESET help site .

Kaspersky

Affected Kaspersky users should upgrade to the latest version of their security product, as Kaspersky 2019 and above includes remedies for this issue. Kaspersky's download page contains update links that will install the latest free version for users with a current subscription.

Otherwise, you can also disable interception of secure connections:

  1. Open Kaspersky's navigation panel.
  2. Click on Settings at the bottom left.
  3. Click on Additional , then on Network .
  4. In the Encrypted connections scanning section, check the Do not scan encrypted connections option and confirm this change.
  5. Finally, shut down and restart the operating system for your changes to take effect in its configuration.

Monitoring / filtering in corporate networks

Some Internet association checking or sifting programs utilized in professional workplaces can block encoded associations by supplanting the site authentication with their own, while causing secure webpage endorsement mistakes. In the event that you suspect this, kindly contact your organization's IT office to guarantee Firefox is appropriately arranged to run appropriately in this climate. You might have to place the declaration in the Firefox Trusted Vendors store. For more data for IT offices, see the Mozilla Wiki CA: AddRootToFirefox .

Malicious software

Certain forms of malware that intercepts encrypted Internet traffic can cause this error message - see Troubleshoot Firefox malware problems for more information on how to deal with malware.

The error only occurs on a specific page

When the problem occurs with only one site, this type of error usually means that the site's web server is not properly configured. If this error occurs on a popular site such as Google or Facebook, or pages where financial transactions are taking place, go to the step above .

Certificate issued by an organization belonging to Symantec

Following the disclosure of irregularities in the certificates issued by Symantec and its organizations, browser developers, including Mozilla, began to gradually remove support for these certificates from their software. Firefox will no longer trust server certificates issued by Symantec, including those issued by the subsidiary brands GeoTrust, RapidSSL, Thawte, and Verisign. For more information, 

In this case, the most common error message will be MOZILLA_PKIX_ERROR_ADDITIONAL_POLICY_CONSTRAINT_FAILED, but for some servers it will be SEC_ERROR_UNKNOWN_ISSUER. If you come across such a page, you should contact its owner to inform them about the problem.

Mozilla strongly encourages website owners who experience this certification problem to replace their certificates. For example, DigiCert provides replacements for these certificates for free .

No intermediate certificate

On the page with the missing intermediate certificate, after pressing the buttonAdvancedon the error page, the following error description will be displayed:

This certificate cannot be checked because its issuer is unknown.
The server does not send the appropriate intermediate certificates.
You might need to import additional root certificates.

The website's certificate may not have been issued by a trusted certification authority, or the complete certification chain has not been provided (the so-called "intermediate certificate" is missing).
You can test that your site has been properly configured by typing that site's address into testing tools such as the SSL Labs test site, for example . If the test page returns the message "Chain problems: Incomplete", then the correct intermediate certificate is missing. We recommend that you contact the owners of the website and inform them about this issue.

Self-signed certificates

On the page with the self-signed certificate after pressing the buttonAdvanced, on the error page, you will see a message with the code ERROR_SELF_SIGNED_CERT:

The certificate is not trusted because it is self-signed.

 


A self-marked declaration that has not been given by a perceived confirmation authority is considered untrusted naturally. Self-marked declarations can guarantee the security of the communicated information, however they give no data about their genuine beneficiaries. This model is normal for intranet locales that are not openly accessible - you can skirt this admonition for such destinations.


Conclusion

Today at joseph solution we discussed the methods and tips to troubleshoot certificate problems on secure website . for more help and all the information about latest technology and modern trends keep following my articles.

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