The latest version of Firefox, Firefox 143, no longer supports older versions of Windows 10. Specifically, versions prior to Windows 10 1803, such as 1703, 1709, or 2015 LTSB, will be unable to launch the browser, and users will receive an error message. This change may cause inconvenience for users still using older versions of Windows 10, and it is recommended that these users consider upgrading their Windows 10 version or choosing another compatible browser.
