The Firefox 77.0.1 version that shows in the System Details is quite old and outdated. Does your Ubuntu OS support the current release ? Verify that you meet the System Requirements (GTK+ and GLib) for the current Firefox release. *https://www.mozilla.org/en-US/firefox/system-requirements/ *https://www.mozilla.org/en-US/firefox/101.0/system-requirements/ ----- You can find the full installer of the current Firefox release (101.0) in all languages and all operating systems here: *https://www.mozilla.org/en-US/firefox/all/#product-desktop-release *https://www.mozilla.org/en-US/firefox/101.0/releasenotes/ *https://support.mozilla.org/en-US/kb/update-firefox-latest-release