audiodg.exe is a part of Windows Vista and Windows 7. System services like audio drivers run in different and isolated login session from the locally logged-in user in Windows Vista or Windows 7. This ensures that content and plug-ins cannot be modified by other applications (e.g. by spyware).

Note: The audiodg.exe file is located in the folder C:WindowsSystem32. In other cases, audiodg.exe is a virus, spyware, trojan or worm!