It appears you are using Firefox 115 ESR on the eol Windows 7. Firefox 116.0 and later requires Windows 10, 11 to run. So Firefox 115 ESR currently at 115.20.0esr is the most current you can run on Windows 7, 8, 8.1. It will get updates till 115.27.0esr in August unless Mozilla decides to extend updates a third time. https://support.mozilla.org/en-US/kb/firefox-users-windows-7-8-and-81-moving-extended-support