%ProgramFiles%\Windows NT\Accessories\ImageViewer.dll
C:\Program Files (x86)\Windows Photo Viewer\PhotoViewer.dll windows photo viewer path
To open Windows Photo Viewer directly:
Launched via:
In newer versions of Windows, Microsoft has hidden the classic Photo Viewer in favor of the modern app. While the .dll file usually remains on your hard drive, it is often disabled in the Registry, meaning it won't appear in the "Open with" menu. %ProgramFiles%\Windows NT\Accessories\ImageViewer
rundll32.exe "C:\Program Files\Windows Photo Viewer\PhotoViewer.dll", ImageView_Fullscreen [PathToImage] rundll32.exe : The system tool used to run DLL files. windows photo viewer path