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when i download firefox i can't open the installer "extraction error"

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The FireFox 11 installer will not open or launch at all. "File corrupt"

I've downloaded to USB thumbdrive from my PC. I've downloaded to cdrom from my MacBook Pro.

Same error on different PC's. Why can't I launch the installer?

The FireFox 11 installer will not open or launch at all. "File corrupt" I've downloaded to USB thumbdrive from my PC. I've downloaded to cdrom from my MacBook Pro. Same error on different PC's. Why can't I launch the installer?

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Did you download the exe installer for Windows?

You can find the latest Firefox release in all languages and for all Operating Systems here:


It is possible that your anti-virus software is corrupting the downloaded files or otherwise interfering with downloading files by Firefox.
Try to disable the real-time (live) scanning of files in your anti-virus software temporarily to see if that makes downloading work.

See "Disable virus scanning in Firefox preferences - Windows"