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Can I download an MSI installer for an older version of Firefox

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I need an MSI installer for Firefox version 57.0.4

Is this readily available for download, and if so can you provide the URL?

I need an MSI installer for Firefox version 57.0.4 Is this readily available for download, and if so can you provide the URL?

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I don't think Mozilla offered MSI installers that far back. If it's not on the FTP server, then you probably need to find an unofficial source. https://ftp.mozilla.org/pub/firefox/releases/57.0.4/