Windows 7 is not a supported operating system, as it reached the end of life in January 2020. Since then, Windows 7 hasn't received any updates, with Microsoft recommending users to maneuver to some newer version of the operating system, be it Windows 8.1, Windows 10, or Windows 11.

However, while Microsoft itself has provided up on Windows 7, other software companies are still providing devices running the operating-system with updates for his or her apps.

Firefox, for example, is constantly on the run on Windows 7, which is certainly good news for those holdouts given Mozilla's browser is one of the best out there.

Starting with Firefox 100, however, Windows 7 users will need to install a special update around the device so that you can run the browser.

Firefox 100 launching the following month

As noticed by TechDows, Firefox 100 requires Windows update KB4474419, as the browser is making the switch to SHA-256 code signing. Support for such tech on Windows 7 is available via the said update, so users are required to install it to continue running Firefox.

The good thing is the update was released in 2019 before Microsoft pulled the plug on Windows 7, which means that all devices still running the operating-system can install it totally free.

"Beginning in this release, the Firefox installer for Windows is signed having a SHA-256 digest, rather than SHA-1. Update KB4474419 is needed for successful installation on the computer running the Microsoft Windows 7 operating system. For more information about this update, visit the Microsoft Technical Support website," Mozilla explains within the release notes of the latest Firefox Nightly build.

Firefox 100 is projected to visit live in early May, so users still running Windows 7 on their information technology has approximately one month to make sure all pre-requisites are met before the latest version from the browser goes live.