I'm having a lot of trouble finding whether the XPS Viewer is enabled or not in Vista.
The setting (or unsetting) is located in Control Panel ----Programs and Features ------Turn Windows features on or off (on the left hand panel) ---------Microsoft .NET Framework 3.0 -----------Windows Communication Foundation HTTP Activity -----------Windows Communication Foundation non-HTTP Activity -----------XPS Viewer
It's the last element that I'm after. I've checked the difference in the registry after turning this element on of off and haven't found any obvious changes. Maybe I didn't dig properly.
