Microsoft KB Archive/194985

= Glide API Features Disabled on Video Adapter =

Article ID: 194985

Article Last Modified on 10/31/2006

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APPLIES TO


 * Microsoft Windows NT Workstation 4.0 Developer Edition
 * Microsoft Windows NT Server 4.0 Standard Edition
 * Microsoft Windows NT Server 4.0 Enterprise Edition

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This article was previously published under Q194985



SYMPTOMS
After you install Windows NT 4.0 Service Pack 4 on a computer with a proprietary 3Dfx function library file (such as the 3dfxgl.dll file installed during the installation of id Software's Quake II), you may not be able to access your video adapter's support for 3Dfx graphics.



CAUSE
The service pack Setup program overwrites the existing Opengl32.dll file in the %SystemRoot%\System32 folder.



RESOLUTION
To work around this behavior, use either of the following methods:


 * Reinstall the Quake II software and select the Full Install option.
 * Rename the Opengl32.dll file located in the %SystemRoot%\System32 folder. Copy the Quake II 3dfxgl.dll file to the %SystemRoot%\System32 folder and rename it to Opengl32.dll.

For information about how to rename a file, click Start, click Help, click the Index tab, type "rename" (without quotation marks), and then double-click the "Renaming files" topic. For information about how to copy a file, click Start, click Help, click the Index tab, type "copy" (without quotation marks), and then double-click the "Copying files" topic.

Note that when you use either of these methods, other programs making function calls to the OpenGL API may not function properly. To provide support for Quake II and other programs that use OpenGL functions, replace the Opengl32.dll file in the %SystemRoot%\System32 folder with a copy of the same file from Windows NT 4.0 Service Pack 3.

NOTE: The third-party products discussed here are manufactured by vendors independent of Microsoft; we make no warranty, implied or otherwise, regarding these products' performance or reliability.



STATUS
Microsoft has confirmed this to be a problem in the Microsoft products listed at the beginning of this article.

Additional query words: voodoo II graphics sp4

Keywords: kb3rdparty kbdisplay kbprb KB194985

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