Why does installing a device driver from a virtual drive fail in Windows 7?

I have a driver that needs to be installed from a virtual drive. I am able to install this driver (*.sys) from the normal directory, but when I try to install it from a virtual drive it does not happen. Is there any constraint on installing Windows device drivers from virtual drives?

I think installing drivers from v开发者_如何学编程irtual drives on Windows XP is possible.

I am using Windows 7, both x86 and x64 versions.

If you're using two different bit versions of windows from your actual windows and your virtual machine. Say that in your virtual machine is windows x64 and your actual windows is x86. The 64 bit version of the driver would not be compatible with the 32 bit version of windows.

After a hell lot of effort, I found that Antivirus is the issue. The setup should not give any error while installing. Please run as administrator when you run the setup and turn off antivirus if any.

Turning vmci0 value to false is not at all a good approach