Cannot guarantee authenticity of the domain to which encrypted connection is established
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General articles: Troubleshooting

 
 
 

Cannot guarantee authenticity of the domain to which encrypted connection is established

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2018 Apr 28 ID: 13585
 
 
 
 

If you get a certificate error when opening a website in the Mozilla Firefox browser, install the Kaspersky Lab software certificate to the browser manually.  

Image: the window of a Kaspersky Lab product

To install the certificate to Mozilla Firefox:

  1. Copy the certificate to any easily accessible location, e.g. to Desktop. The certificated is located in the folder: С:\ProgramData\KasperskyLab\AVPX.0.0\Data\Cert\(fake)Kaspersky Anti-Virus Personal Root Certificate.cer where X stands for the application version.
    ProgramData is a hidden folder. To access it, enable display of hidden files and folders.

Image: the location of the Kaspersky Lab certificate

  1. In the web browser window, click the settings button common_13585_03 and select Options

Image: Mozilla Firefox window

  1. Click AdvancedCertificatesView Certificates.

Image: Mozilla Firefox settings window

  1. In the Certificate Manager window, click Authorities → Import.

Image: the certificate management window in Firefox

  1. Find the Kaspersky Lab certificate file you copied earlier and click Open.

Image: the location of the Kaspersky Lab certificate

  1. Select all check boxes and click OK.

Image: importing the certificate to Mozilla Firefox.

The issue may occur in other browsers. It occurs with the following Kaspersky Lab products installed:

  • Kaspersky Internet Security 2017 / 2016
  • Kaspersky Anti-Virus 2017 / 2016
  • Kaspersky Total Security 2017 / 2016
  • Kaspersky Small Office Security 5.0 / 4.0
 
 
 
 
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