Will Firefox version 100 work on Windows 7?

Firefox Firefox Sidst opdateret: 06/30/2023 83% of users voted this helpful
No one has helped translate this article yet. If you already know how localizing for SUMO works, start translating now. If you want to learn how to translate articles for SUMO, please start here.

Beginning with Firefox version 100, Microsoft security update KB4474419 is required for successful installation of Firefox on a computer running the Windows 7 operating system. For details about this Windows update, visit the Microsoft Technical Support website.

Note: If you install Firefox without Microsoft security update KB4474419, you may notice an orange or yellow warning message in the UAC (User Account Control) prompt, indicating that the installer is not properly signed. The Firefox installation, however, will complete and Firefox will work.

Most Windows 7 users will have Microsoft update KB4474419 already installed, since it was an automatic Windows update. To make sure this update is installed on your computer:

  1. Click the Windows Start button or press the Windows key Windows Key.
  2. In the Start Menu, click Control Panel.
  3. In the Control Panel window, click the Programs link, then click Programs and Features.
  4. Click on View installed updates and wait for the list to be filled in.
  5. Search for KB4474419 using the search field in the upper right corner.

If Security Update for Microsoft Windows (KB4474419) is listed, you can install Firefox without any issues.

Related content

Firefox users on Windows 7, 8 and 8.1 moving to Extended Support Release

Hjalp denne artikel?

Vent venligst...

These fine people helped write this article:

Illustration of hands

Bliv frivillig

Grow and share your expertise with others. Answer questions and improve our knowledge base.

Læs mere