Disable Firefox Browser Automatic Virus Scan On Downloaded Files

Mozilla Firefox automatically scan all download files right after completing the download. It is to ensure the downloaded files are safe and free from malicious codes. Automatic virus check by Firefox improves the security of our computers from malicious programs by preventing the chances of downloading virus codes into our computers though downloaded files. Though it is a nice feature, if you have installed an AntiVirus software on your computer you don't need to waste time for waiting the completion of automatic virus detection by browser on downloaded files. If you do not want to wait for automatic malware check by it, you can disable this feature. Steps to disable default virus scan on downloaded documents by Firefox are provided below.


How to Disable Firefox Virus Check On Downloaded Files

Steps to disable automatic virus scan on downloaded files are:
  1. Open browser

  2. Type about:config in the address bar and press enter
    Auto scan

    Now you will see a warning window. You should click on I'll be careful, I Promise! button.


  3. Right click on browser.download.manager.scanWhenDone
    Stop default virus scan on downloaded files


  4. Now click on Toggle to set the value false.
    no more malware checking

    Now onwards it will not scan downloaded documents for malware infection. It is important to make sure your PC has reputed reliable security suit which can detect and prevent any possible malware infections. If you are not sure about the reliability of the security suit installed on your laptop, I recommend you to don't set the value false.

Improve System Performance By Turning Off Firefox Browser Virus Check

We can optimize the system performance by disabling automatic malware check by Firefox on downloaded documents. Also there are other methods to optimize Mozilla browser and optimize our computer performance and RAM usage. To learn more about it click on the link below.
Reduce Mozilla RAM Usage and Increase System Performance



Other Firefox Browser Tutorials

  1. Remove saved passwords in Mozilla 3.5 and above

  2. How to Enable Spell check

  3. No properties option in Mozilla 3.6 right click menu- Fix

  4. How to disable session restore in Firefox browser

Technology Blog

2 comments:

IT Network Support said...

But why would you need to disable the auto virus scan? wouldn't it be threatening to your computer?

Alex George said...

Thanks for your comment.

In normal cases disable Auto scan in Firefox is a bad idea. If you are concerned about increasing the speed of your Firefox browser, you can disable this virus scan ( Assume your computer has another AntiVirus Program).