Modified by cor-el
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Thanking you for reaching out! Is it possible to give some more information about your question so that I can assist you better?
If your problem is solved, please mark an answer as a solution to let others know this thread is finished. Thanks!
Your Windows XP platform is no longer supported, so you can no longer update Firefox beyond Firefox 52. Current Firefox releases require Windows 7 and newer. Users on Windows XP and Vista have been moved to the Firefox 52 ESR version.