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Why can't I open the setup.exe file to install newer verion of Firefox?

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I am using firefox 3.6.25. When I try to download and install the latest version a dialog box opens with the option to "save' or "cancel". There is no option to "open" the executable file.

I am using firefox 3.6.25. When I try to download and install the latest version a dialog box opens with the option to "save' or "cancel". There is no option to "open" the executable file.

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-> How to install Firefox on Windows

Check and tell if its working.

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-> How to install Firefox on Windows

Check and tell if its working.