When you are using a program that calls the default viewer for a Rich Text Format (RTF) file that contains an especially malformed control word in the file header, the program may not work properly or may generate a general protection (GP) fault.

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A supported fix that corrects this problem is now available from Microsoft, but it has not been fully regression tested and should be applied only to systems experiencing this specific problem.

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Windows 98, Windows 98 Second Edition

The following files are available for download from the Microsoft Download Center:
The English-language version of this fix should have the following file attributes or later:

For Windows 95:

   Date       Version         Size    File name     
   -------------------------------------------------
   12/13/99   5.0.1461.82     203,024   Riched32.dll		
   11-30-99   1.0325.2180.1   315,152   Usp10.DLL			
   11-23-99   5.0.153.0       286,208   Riched20.dll
   -or-
   12-14-99   5.30.23.1200    431,376   Riched20.dll
				

For Windows 98:

   Date       Version       File name   Platform
   -------------------------------------------------
   12/13/99   5.0.1461.82     203,024   Riched32.dll
   11/30/99   1.0325.2180.1   315,152   Usp10.dll			
   11/23/99   5.0.153.0       286,208   Riched20.dll
   -or- 
   12-14-99   5.30.23.1200    431,376   Riched20.dll
				

For additional information about how to download Microsoft Support files, click the following article number to view the article in the Microsoft Knowledge Base: 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.

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Windows NT 4.0, Windows NT 4.0 Enterprise Edition

To resolve this problem, obtain the individual package referenced below or obtain the Windows NT 4.0 Security Rollup Package. For additional information on the SRP, click the article number below to view the article in the Microsoft Knowledge Base: The following files are available for download from the Microsoft Download Center:
The English-language version of this fix should have the following file attributes or later:

   Date       Time      Size      File name     Platform
   -------------------------------------------------------------
   12/23/99    3:52pm   173,328   Riched32.dll   x86
   12/23/99   12:49pm   268,560   Riched20.dll   x86
   12/23/99    3:52pm   282,896   Riched32.dll   Alpha
   12/23/99   12:50pm   482,576   Riched20.dll   Alpha
				

For additional information about how to download Microsoft Support files, click the following article number to view the article in the Microsoft Knowledge Base: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 secure servers that prevent any unauthorized changes to the file.

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Windows NT Server 4.0, Terminal Server Edition

To resolve this problem, obtain the Windows NT Server 4.0, Terminal Server Edition, Security Rollup Package (SRP). For additional information about the SRP, click the article number below to view the article in the Microsoft Knowledge Base:

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Windows 95, Windows 98, Windows 98 Second Edition, Windows NT 4.0, Windows NT 4.0 Enterprise Edition

Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article.

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Windows NT Server 4.0, Terminal Server Edition

Microsoft has confirmed that this problem may cause a degree of security vulnerability in Windows NT Server 4.0, Terminal Server Edition.

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If you reinstall or upgrade Microsoft Office, you need to reinstall this hotfix.

For related information about this problem, please visit the following Microsoft Web site: For additional security-related information about Microsoft products, please visit the following Microsoft Web site: For additional information about Windows 95 hotfixes, click the article number below to view the article in the Microsoft Knowledge Base: For additional information about Windows 98 and Windows 98 Second Edition hotfixes, click the article number below to view the article in the Microsoft Knowledge Base:

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