Disable Firefox Browser Automatic Virus Scan On Downloaded Files

Mozilla Firefox automatically scans 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 through 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 for the completion of automatic virus detection by the 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.



Steps to disable automatic virus scan on downloaded files are:

1. Open browser
   
   
2. Type about:config in the address bar and press enter
   
   
   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
   
   
   
   
4. Now click on Toggle to set the value false.
   
   
   Now onwards it will not scan downloaded documents for malware infection. It is important to make sure your PC has a reputed reliable security suite which can detect and prevent any possible malware infections. If you are not sure about the reliability of the security suite installed on your laptop, I recommend you to don't set the value false.

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

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