Hi, is it a company computer, or a personal computer? This message usually indicates that an Enterprise Policy is being applied to your Firefox. This is not surprising in a workplace, but it is less common at home. The most common culprit is your security software. As a starting point, does clicking the message lead to the About Policies page? If not, please type or paste '''about:policies''' in the address bar and press Enter to load it. This page has two panels; the Active panel is the important one. Usually, that will say "The Enterprise Policies service is inactive." but yours probably lists at least one policy. What do you see?