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Instead of running firefox.exe, computer asks me to "choose the program you want to use to open this file".

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When I click on either the firefox shortcut or firefox.exe in the Mozilla folder, instead of running, the computer asks me to "Choose the program you want to use to open this file: firefox.exe". The recommended program is Adobe Reader 9.1, which obviously doesn't help.

I have uninstalled firefox and downloaded it again, but now I am trying to run Firefox Setup 4.0.exe, and it asks me again to "Choose the program you want to use to open this file: firefox setup 4.0.exe" Help?

When I click on either the firefox shortcut or firefox.exe in the Mozilla folder, instead of running, the computer asks me to "Choose the program you want to use to open this file: firefox.exe". The recommended program is Adobe Reader 9.1, which obviously doesn't help. I have uninstalled firefox and downloaded it again, but now I am trying to run Firefox Setup 4.0.exe, and it asks me again to "Choose the program you want to use to open this file: firefox setup 4.0.exe" Help?

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This is a registry problem with your .exe entry The below program worked for me on my vista machine.

http://windowsxp.mvps.org/exefile.htm

You can download an exe file from there that automatically sorts the issue or you can edit the registry manually.