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Can I safely delete older versions of Firefox from my download file?

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I have several versions of Firefox listed in my computers download file. Is it safe to delete the older versions or are they NEEDED for the current version to operate properly?

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cor-el
  • Top 10 Contributor
  • Moderator
10740 solutions 96657 answers

Yes, you can safely remove Firefox installation (setup) files from older Firefox versions that you no longer have installed.

If you mean entries in the Control Panel Programs then you should be cautious because entries from older Firefox installation are usually leftover, orphaned, entries that all point to the current release and uninstalling such an older version will remove the current Firefox version.