Tired as Firefox automatically scans every file you download? The browser since version 3.0, in fact, drew antivirus verify that the file you just return on your machine is safe. Obviously, if you download a large file, the scanner can take time.

To disable this feature, follow the Step:


  1. Open Firefox

  2. In the address bar, type about: config

  3. Ignoring the warning

  4. In the search box, write: browser.download.manager.scanWhenDone

  5. Double-click the line to move the value to "false"

  6. Quit and then restart Firefox



And voila!