Under the General tab, towards the bottom you will see classified under Security: This file came from another computer and might be blocked to help protect this computer. Click on Unblock.

Copying Files Using the Live File System Insert a blank write protected CD-R into your computer's disc burner drive. The AutoPlay dialog box should open.

Windows Security monitors files added to your PC, especially those from the internet. If a file seems harmful, you'll see a warning "These files might be harmful to your computer".