This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Firefox won't install

  • 2 respostas
  • 4 have this problem
  • 10 views
  • Last reply by DJFo

more options

Having been using the beta and then the RC, my FF apparently updated to the official 4.0 when it was released. However it was still showing as Beta 6 in my start menus and shortcuts which was an annoyance. I uninstalled Beta 6 to start afresh but now cannot install 4.0.

When I click to run it, it shows the usual Windows UAC dialog which I accept, and then the installation file extracts - and then nothing. I've also tried running it in various compatibility modes with the same result - it 'extracts' and nothing happens. I'm running Windows 7 64-bit.

Having been using the beta and then the RC, my FF apparently updated to the official 4.0 when it was released. However it was still showing as Beta 6 in my start menus and shortcuts which was an annoyance. I uninstalled Beta 6 to start afresh but now cannot install 4.0. When I click to run it, it shows the usual Windows UAC dialog which I accept, and then the installation file extracts - and then nothing. I've also tried running it in various compatibility modes with the same result - it 'extracts' and nothing happens. I'm running Windows 7 64-bit.

All Replies (2)

more options

Still not working, and nor is installation of any of the previous versions - they all do the same thing, 'extracts' and then nothing.

In desperation I just copied the program folder from my Vista laptop onto my main computer and bizarrely it's working. Obviously this is not ideal as FF is not properly installed into the system, and doesn't show up in the Start Menu etc.

Would really appreciate if anyone could help with this considering Mozilla ignores everyone.

more options

Well thanks for the help everyone - thankfully I was able to talk to someone in the chatbox in the end who actually did help.

They provided the solution of extracting the setup file via 7Zip instead, as opposed to using it's in-built extractor. Once the files were unzipped I was able to run the setup file from my Desktop.