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Is "Firefox 40" the name of latest Firefox browser? (n00b question)

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Hi! I'm using a program that requires Firefox 40. The version of Firefox I have is version 111.0 (desktop). Is "Firefox 40" just the name of the Firefox browser? If I have v.111.0, does that mean I have Firefox 40?

Silly question, I'm sure. Can't seem to find the answer in my searches.

Thank you!

Hi! I'm using a program that requires Firefox 40. The version of Firefox I have is version 111.0 (desktop). Is "Firefox 40" just the name of the Firefox browser? If I have v.111.0, does that mean I have Firefox 40? Silly question, I'm sure. Can't seem to find the answer in my searches. Thank you!

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Firefox 40 would be a very old Firefox version from 2015, so I would advise not to install this version.