


Normally, you won't have to see this message anymore, but it is not beyond the realm of possibility for it to appear occasionally, for whatever reasons. This will tell Yandex.Browser to remember AdGuard certificate as a trusted one, at least for a while. The easiest way is to click on the Go to site button. This leads to the warning message you have encountered. However, AdGuard also adds its certificate to the trusted ones. This is not unsubstantiated, because sometimes malicious apps can inject their own certificates and use this to harm the system and steal private data. Current Yandex policy is to warn their users about any certificate that is not recognized by the browser. If you are a user of both AdGuard for Windows and Yandex.Browser you may have come across this warning:īoth AdGuard and Yandex take users' security on the Internet very seriously. Restart the browser and the error should go away.

You've successfully installed AdGuard certificate. You can also open the download page by clicking on the link via the AdGuard app at Settings → Network → HTTPS filtering.ģ) Open your browser and then open Settings.ĥ) Scroll down to Certificates and click on the View Certificates button.Ĩ) Browse the downloaded cert.cer file and click Open.ĩ) Check the Trust this CA to identify websites box and then lick OK. The browser should start downloading cert.cer file.

Names of buttons and menu items may differ in other Firefox-based browsers.Ģ) Go to and click the Download button. If that doesn't help, follow the instructions for manually adding the AdGuard certificate to the FireFox storage. If something like this happens, first try to click the Reinstall Certificate button - you will find it in the Network tab. Since v68, FireFox trusts the system certificates, but you still can face the "Connection is untrusted" error. Old FireFox versions, as well as browsers based on them, do not trust certificates from the system storage, but only those from their local storage. Potential Security Risk error in Firefox-based browsers This happens most often in Firefox-based browsers like Mozilla Firefox, PaleMoon, Waterfox, etc., or in Yandex.Browser. But in some cases this is not enough and you may come across warnings or errors. Normally browsers trust the AdGuard certificate once it's added to the system certificate storage during the installation process. You can learn more about why a certificate is required by reading this article. To be able to filter HTTPS-traffic and efficiently block ads and trackers, AdGuard generates a special (and unique) root certificate and installs it into the system storage.
