Symptoms
You are unable to open a PowerPoint Show (.pps) file.
Cause
Neither Microsoft Office PowerPoint 2007 nor Microsoft Office PowerPoint Viewer 2007 is installed on your computer.
Resolution
Install Office PowerPoint 2007 or Office PowerPoint Viewer 2007 on your computer.
If you don't own PowerPoint 2007, you can download and install the free Office PowerPoint Viewer 2007 to view full-featured presentations.
For information about how to install Office PowerPoint Viewer 2007, see Install and run PowerPoint Viewer, or go directly to the Microsoft Download Center to download it.
