Solution: Unable to install Oracle_VM_VirtualBox_Extension_Pack-4.1.8-75467 on Win7 64-bit

I was trying to install virtual box extension pack in order to get usb 2.0 support on my VM however I encounter this problem while installing:

The problem is because of AntiVirus denied the access of installing the extension pack. I am using ClamAV from Immunet, ClamAV has no disabled or close function to disable the antivirus, what I did is stop the Immunet service from Services:

Stop the Immunet service from Services.


Viola! Installation successful! 🙂

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