@davidsontiago If you are using sysprep, include the command line option to tell sysprep to power off the computer. You have this message because when you pick shutdown from the menu, windows doesn’t actually shutdown the computer but put it into a sleep state leaving some files open that FOG sees. Sysprep will power off the computer correctly for cloning or use the following command “shutdown -s -t 0” to properly power off the source computer and close all open files.