The certificates are checked in a chain from the self-signed certificate to the trusted root certificate issued by the certification authority. For instructions on updating root certificates on Windows 7, 8, 8.1, 10, see below. To see on which Windows root certificate the website certificate is based, click View certificate in the warning message ang go to the Certification Path tab. For example, the DST Root CA X3 certificate, on which website certificates in a browser are based, expired on September 30, 2021.

Windows root certificates are not updated.

The certificate must be issued by a certification authority after a proper check. For example, the website owner can request revocation if the site was hacked. If you are not sure if the website is safe, you can check it with OpenTip before proceeding.

Click Show details → I wish to continue in the browser window.

If the notification appears on a website you don't use often, you can allow opening it once.

Kaspersky Anti-Virus, Kaspersky Internet Security, Kaspersky Total Security, Kaspersky Security Cloud, Kaspersky Small Office Security.

Kaspersky Basic, Standard, Plus, Premium.

See the instructions for the following applications: If you are sure that the website is safe (for example, if it's the official Microsoft website or an official page of your bank) and you visit it regularly, add this website to the exclusions. To fix the issue, restore the settings to default. If the warning appears not for websites but for applications installed on your computer, this means default encrypted connections scan settings have been changed. We do not recommend visiting such websites.įor detailed information about what can cause the message to appear, see the section below.

There is a possibility that intruders may steal your account data and other personal information. When opening a website, a warning message appears stating that ' Certificate verification problem detected' or that 'Authenticity of the domain to which encrypted connection is established cannot be guaranteed'.

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