Identify 16-bit Programs that Are Running
To determine if any 16-bit programs are currently running, and identify any that are:
1. Start Task Manager. To do so, right-click a blank spot on the taskbar, and click Task Manager.
2. On the Processes tab, note the contents of the Image Name column.
3. If any 16-bit programs are running, you see an entry for Ntvdm.exe, which is the virtual DOS machine that is provided by Windows XP. You also see wowexec.exe (the Windows on Windows subsystem), and the executable name of each 16-bit program that is running in that WOW virtual machine. As a helpful visual aid, wowexec.exe and the 16-bit executable file names are indented.