“*.pps is not a valid Win32 application” error message

A client could not open *.pps files from an email. They would have to save it to their desktop, then open up the Powerpoint Viewer and navigate to the file.

I found a few sites that provided instructions on how to edit the registry to fix this – they did not seem to help them.

HKEY_CLASSES_ROOT\PowerPointViewer.SlideShow.11\shell\Show
HKEY_CLASSES_ROOT\PowerPointViewer.SlideShow.11\shell\open

Continue reading