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Disable USB Autorun to Save PC from USB Viruses

March 22nd, 2008 by Ashfame

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Pen drives are very common these days. Everybody has them for their daily data transfer needs and since these are connected to different computers very often, they become a easy carrier of malicious codes (virus, trojans, spywares etc).

How viruses spread from USB/Thumb/Pen drive?

Whenever a USB drive is plugged into a infected computer, virus copies itself to the pen drive and sets it to execute itself when pen drive is accessed by making changes in the autorun.inf. Whenever pen drive is accessed, the autorun.inf calls the executable file of the virus upon which the system gets infected.

How to save your computer from viruses from USB/Thumb/Pen drive?

The most effective method of preventing your system from getting infected is to disable autorun feature of USB devices. DJ tells us about disabling autorun feature on Sizlopedia. He tells us a method in which he uses gpedit.msc and disable autorun feature but the problem is that gpedit.msc is not available under Windows XP Home Edition.

So, I am going to explain how to disable USB autorun feature through registry editing which not only works for WInXP Home but also for any other edition of Windows.

  • Browse to the following key HKEY_CURRENT_USER\Software\Microsoft\Windows\ CurrentVersion\Policies\Explorer
  • Modify the value of NoDriveTypeAutoRun to df (hexadecimal)

disable_autorun

Although I must warn you that playing with the registry can be harmful for your system and you might end up re-installing your OS. Before making any changes, I recommend reading How to backup your registry?

disable_autorun_reg

And if you don’t want to edit the registry then you can download this registry entry.

Download Disable_autorun.reg.

Right Click > Save it on your computer > Run it on your computer.

Press Yes when it asks for confirmation for adding the entry into the registry.

This will now prevent any virus from auto executing itself through a USB drive. In addition to this, you must have a good anti virus installed on the system as this method just stops the virus from infecting the system automatically.

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7 responses so far ↓

  • 1 Quiz_Master Mar 23, 2008 at 10:33 pm

    This trick will help me a lot. My friend’s PCs get infected by these kinda viruses almost 3-4 times in a month…

    Thanks for this.

  • 2 Ebook Mar 25, 2008 at 11:49 am

    Thanks for this nice tips :mrgreen:

  • 3 Ashfame Mar 27, 2008 at 7:20 pm

    @Quiz_Master, Ebook
    You are welcome.

  • 4 Rakshit Mar 29, 2008 at 8:42 pm

    This is very useful. You don’t know when your system will get infected with viruses. I already implemented it long before.

  • 5 Oscar Apr 23, 2008 at 1:32 am

    Really useful!! What a tip!

  • 6 joshuatly Apr 24, 2008 at 8:49 pm

    yaya, this is what im searching for!

  • 7 Nikolai Elkwood Apr 26, 2008 at 8:12 pm

    Thnx for the tip man!