Firefox ESR 140.4

Firefox Extended Support Release

Source: mozilla.org

Release	Date	Hash	Show all revisions
140.4	Oct 15, 2025	384cbb36ea01ad0c
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Developer: mozilla.org/en-US/firefox/organizations

Support: mail.mozilla.org/listinfo/enterprise
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140.4 updated a day ago
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.avif .htm .html .oga .ogg .ogv .pdf .shtml .svg .webm .webp .xht .xhtml