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Important This article contains information about modifying the registry. Before you modify the registry, make sure to back it up and make sure that you understand how to restore the registry if a problem occurs. For information about how to back up, restore, and edit the registry, click the following article number to view the article in the Microsoft Knowledge Base:
256986 Description of the Microsoft Windows Registry
If the following conditions are true, a presentation does not open in Microsoft Office PowerPoint 2003 Viewer:
You install Microsoft Windows XP Service Pack 2 (SP2).
You try to open a Microsoft PowerPoint presentation that is in an e-mail message in Microsoft Outlook Express.
This issue may occur because several Open commands were not added to the registry when you installed PowerPoint 2003 Viewer.
To work around this issue, use one of the following methods.
Method 1: Save the PowerPoint presentation as an attachment
Save the PowerPoint presentation as an attachment in the Outlook Express e-mail message, and then open the saved presentation in PowerPoint 2003 Viewer.
Method 2: Add registry keys for PowerPoint 2003 Viewer
Warning If you use Registry Editor incorrectly, you may cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that you can solve problems that result from using Registry Editor incorrectly. Use Registry Editor at your own risk.
To add the required registry keys for PowerPoint 2003 Viewer, follow these steps:
Click Start, click Run, type regedit in the Open box, and then click OK.
Locate and then select the following registry key:
To add the Open command to the key that is specified in step 2, follow these steps:
On the Edit menu, point to New, and then click Key.
Type Open, and then press ENTER.
With the Open key selected, point to New on the Edit menu, and then click Key.
Type command, and then press ENTER.
With the command key selected, right-click (Default), and then click Modify.
In the Value data box, type the following, and then click OK: