Windows 7/Mozilla Firefox

Mozilla hasn’t announced an end of support date for Windows 7 yet, but it may be longer than Chrome, and certainly a final ESR release will give it another year of support. It ended support for Windows Vista with version 52, but now an extended kernel can run newer versions. Version 100 of Firefox currently crashes under the extended kernel, but versions up to 99 still work.

KB4474419 needs to be installed from Windows Update or the Update Catalog to run Firefox version 100 upwards, this also means SP1 needs to be installed.