Certificate problem notification when opening a website
We use cookies to make your experience of our websites better. By using and further navigating this website you accept this. Detailed information about the use of cookies on this website is available by clicking on more information.
Accept and close



General articles [old]: Common for products


Certificate problem notification when opening a website

Back to "Common for products"
Latest update: 2019 Apr 01 ID: 12489

This article concerns: 

  • Kaspersky Anti-Virus 
  • Kaspersky Internet Security
  • Kaspersky Total Security
  • Kaspersky Security Cloud
  • Kaspersky Small Office Security

If you get the message "Connection not protected” when opening a website, it means the website might not be safe. Should this be the case, your account details and other personal information could end up in the hands of criminals. We therefore recommend that you don’t open websites with certificate issues. 

A certificate is a digital signature which ensures that the user’s connection to the website is encrypted. It also confirms that the website is genuine. 

If you are certain the site is safe, click I understand the risks and wish to continue.

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

If you don’t want these messages to appear, disable encrypted connections scanning or add the website to the exclusions list. See below for instructions on how to do so.


Possible causes


How to eliminate the error by disabling encrypted connections scanning


How to eliminate the error by excluding a website from encrypted connections scan scope


For Chromecast users


What to do if the message appears again

Was this information helpful?
Yes No
Thank you


Have you found what you were looking for?

Please let us know how we can make this website more comfortable for you

Send feedback Send feedback

Thank you!

Thank you for submitting your feedback.
We will review your feedback shortly.


How can we improve this article?

We will not be able to contact you if you leave your email address or phone number. To contact technical support, please sign in to your Personal Account.

Submit Submit

Thank you for your feedback!

Your suggestions will help improve this article.