Firefox - Disable antivirus scan upon downloading files

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Mozilla Firefox has a built-in virus scanner.. If you have already installed an antivirus software on your computer, you can disable the Firefox scanner. Thus, double-scan can be avoided. To disable this feature:
  • In the address bar type the following command : about:config
  • Click on the: "I'll be careful, I'll promise" button.
  • Search for the following entry:
  • Toggle its value to "False"
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