Here what happened to me "out of the blue", meaning it used to work yesterday, and I didn't (knowingly) install any software.
When I double click an image file, i.e. a .jpg or .png file, on the Desktop, I see the Window Picture and Fax viewer open and instantaneously closing. I think I see the text "generating preview" but everything happens really fast you can't tell for sure.
.jpg and .png files are associated to the Picture and Fax viewer and can be opened in any folder on my system.
Th right-click menu show Preview as first menu item, bolded; I have already explicitly restored the associations in [Tools -> [Folder Options -> [File Types That option exposes the same behaviour as double-click.
Drag-n-drop starting from desktop to an alreay open Picture and Fax viewer generates an empty screen saying "no preview available".
The funny :twisted: part is that double clicking on the same files in C:\Documents and settings\sinkrideutan\Desktop works normal, and when I copy or move the image files from the desktop to any other directory they become double clickable !!!
Any help really appreciated