Microsoft KB Archive/259064

= Visual Studio installation fails with Windows 95, Windows 98, Windows Millennium Edition, and Windows 2000 on the same partition =

Article ID: 259064

Article Last Modified on 2/16/2007

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APPLIES TO

 Microsoft Visual Studio 6.0 Enterprise Edition, when used with:  Microsoft Windows 95

 Microsoft Windows 98 Standard Edition

 Microsoft Windows 2000 Standard Edition

 Microsoft Windows Millennium Edition</li></ul> </li></ul>

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This article was previously published under Q259064

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SYMPTOMS
When you install Microsoft Visual Studio 6.0 on a hard disk that has Microsoft Windows 95, Windows 98, Windows Millennium Edition, or Windows 2000 installed on the same partition, you may receive the following (or similar) error message:

msdasql.dll was unable to register itself in the system registry.

In fact, several dynamic link library (.dll) files cannot register themselves in the system registry. Other error messages refer to the following .dll files:

Msdaps.dll

Msdatt.dll

Oledb32.dll

Msador15.dll

Msadrh15.dll

Msado15.dll

Msdaora.dll

Msadds.dll

Msadce.dll

Msadco.dll

Msprst.dll

At the end of the installation, you may receive the following error message:

Visual Studio 6.0 setup was not completed successfully.

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CAUSE
This behavior occurs when Windows 2000 is installed on the same partition as Windows 95, Windows 98, or Windows Millennium Edition. The \Program Files\Common Files\Microsoft Shared folder is overwritten with newer versions of these files.

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RESOLUTION
We recommend that you divide the hard disk into multiple partitions, and then reinstall each operating system to a separate partition.

To install Visual Studio 6.0 without repartitioning your hard disk and reinstalling the operating system, you can perform the following steps. However, be aware that your operating system may still be unstable. <ol> Manually remove the incomplete Visual Studio 6.0 installation. For additional information about how to manually remove the incomplete installation, click the following article number to view the article in the Microsoft Knowledge Base:

248347 How to prepare for and perform a clean installation of Visual Studio 6.0

</li> Download Microsoft Data Access Components (MDAC) version 2.5 or later from the following Web site:

http://msdn2.microsoft.com/en-us/data/aa937695.aspx

NOTE: MDAC version 2.5 is included with Windows 2000.</li> Reinstall Visual Studio 6.0</li></ol>

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Steps to reproduce the behavior

 * 1) Install Windows 95, Windows 98, or Windows Millennium Edition. Then, install Windows 2000 to the same partition.
 * 2) Install Visual Studio 6.0.

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