The End of Support Calendar shows Microsoft Operating Systems end of support dates, whether they are the end of mainstream support that updates features and cosmetic changes, or extended support, which ends security fixes and all Microsoft technical support other than old web pages.
Security updates for Microsoft Office 2021 end October 13, 2026.
Event Information:
-
Sun01Feb2026
Firefox end of support for Windows 7, 8, and 8.1
For users of the ESR version of Firefox, also known as the Extended Support Release, February 2026 is the end of support in Firefox for Windows versions 7, 8, and 8.1.
https://support.mozilla.org/en-US/kb/firefox-users-windows-7-8-and-81-moving-extended-support