This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

My security is questioning my use of Firefox because of a lapsed licence.

more options

I keep getting a warning from my Kaspersky security suite telling me that I shouldn't use Firefox because of a lapsed licence. When I give permission to continue it warns me that my security will be compromised.

I keep getting a warning from my Kaspersky security suite telling me that I shouldn't use Firefox because of a lapsed licence. When I give permission to continue it warns me that my security will be compromised.

All Replies (1)

more options

That's a new one! Could you post a screenshot of the warning? This article has tips on how to capture screenshots: How do I create a screenshot of my problem?

Please cut out or blur any sensitive information in the image before attaching it to your reply.

Also, in case you are seeing one of Firefox's built-in error pages about an expired website certificate, does this article help?

What do the security warning codes mean?