Before proceeding with any of the steps below, make sure that the installer program for the Canon drivers or software you're trying to install isn't already running. If the installer is already running, and you attempt to run the installer again while the first instance of the installer is running, the "Can't create output file" error will appear. Check the Taskbar or the Windows Task Manager to ensure that the installer isn't already running.
Verifying that the Scanner is Detected by the Computer (Windows) On the Start menu, right-click Computer, then select Properties. Select Device Manager on the upper left of the screen.