You receive a "USP10.DLL was not found" error message when you use computer that is running Windows 98 to view a PowerPoint 2003 presentation


When you use Microsoft Windows 98 to try to run a Microsoft Office PowerPoint 2007 or Microsoft Office PowerPoint 2003 presentation that was packaged to a CD, you receive the following error message:
A required .DLL file, USP10.DLL was not found.


This issue occurs because the PowerPoint 2003 Viewer system requires Microsoft Windows 98 Second Edition and later. If you try to run the Viewer on an earlier version of Microsoft Windows, you receive the error message that is mentioned in the "Symptoms" section.
Note The PowerPoint 2007 Viewer requires at least Microsoft Windows 2000 with Service Pack 4.


To resolve this issue, run the PowerPoint 2003 Viewer on a supported version of Microsoft Windows. Supported operating systems include:
  • Windows 98 Second Edition
  • Microsoft Windows 2000 Service Pack 3 (SP3) and later
  • Microsoft Windows Millennium Edition (Me)
  • Microsoft Windows XP
  • Microsoft Windows Server 2003

For PowerPoint 2007 Viewer, the supported operating systems include the following:
  • Microsoft Windows 2000 with at least Service Pack 4 (SP4)
  • Microsoft Windows XP
  • Microsoft Windows Server 2003
  • Windows Vista


To work around this issue, download and install the Microsoft Windows Installer 2.0 Redistributable (this includes the Usp10.dll file).

The following file is available for download from the Microsoft Download Center:

Download Download the Windows Installer 2.0 Redistributable for Windows 95, 98, and Me package now.
For additional information about how to download Microsoft Support files, click the following article number to view the article in the Microsoft Knowledge Base:
119591 How to Obtain Microsoft Support Files from Online Services
Microsoft scanned this file for viruses. Microsoft used the most current virus-detection software that was available on the date that the file was posted. The file is stored on security-enhanced servers that help to prevent any unauthorized changes to the file.

Article ID: 827763 - Last Review: Feb 15, 2017 - Revision: 2

Microsoft Office PowerPoint 2003, Microsoft Windows 98 Standard Edition, Microsoft Office PowerPoint 2007