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Why is there a problem with Setup.exe when upgrading from 2.0 to 3.6.3?

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  • 2 have this problem
  • Last reply by Shawn

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I am trying to upgrade Firefox on a laptop that currently has 2.0. I downloaded 3.6.3 and opened setup. I get an error message indicating that setup cannot run setup.exe. It advises I restart my computer. When I do, it does no good. Please advise.

This happened

Just once or twice

== I tried to upgrade from 2.0 to 3.6.3.

All Replies (2)

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 You have an old version of Windows installed. See
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Firefox is the last ever version of Firefox for Win98 / SE / ME.

You can try KernelEx to get Firefox 3+ to work, but it would be very slow with an old PC of less than 750Mhz.