Microsoft security patches doesn’t protect you from doing that. Unsupported Win 10 behind firewall is perfectly fine, as long as you use an updated browser
Even that won't last forever. Notably, Edge is only guaranteeing updates until October 2028 [1], coinciding with the end of Windows 10's 3-year ESU period. Previously, Chromium ended support for Windows 7 at the end of its ESU period (which was also the end of support for Windows 8.1) [2]. However, Firefox continues to support Windows 7/8.1 by providing security updates for an older ESR version of Firefox 115; they appear to be re-evaluating whether to continue support every 6 months, currently set to end in March 2026.
Microsoft security patches doesn’t protect you from doing that. Unsupported Win 10 behind firewall is perfectly fine, as long as you use an updated browser
Even that won't last forever. Notably, Edge is only guaranteeing updates until October 2028 [1], coinciding with the end of Windows 10's 3-year ESU period. Previously, Chromium ended support for Windows 7 at the end of its ESU period (which was also the end of support for Windows 8.1) [2]. However, Firefox continues to support Windows 7/8.1 by providing security updates for an older ESR version of Firefox 115; they appear to be re-evaluating whether to continue support every 6 months, currently set to end in March 2026.
[1]: https://learn.microsoft.com/en-us/deployedge/microsoft-edge-...
[2]: https://support.google.com/chrome/thread/185534985/sunsettin...
[3]: https://whattrainisitnow.com/release/?version=esr
I have patched Firefox 115 to run on XP, so no doubt it would be much easier to continue doing it for something as new as Win10.