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The following error message occurs when trying to connect to SQL Server using ActiveX Data Objects (ADO):

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Microsoft Knowledge Base Article

This article contents is Microsoft Copyrighted material.
©2005-©2007 Microsoft Corporation. All rights reserved. Terms of Use | Trademarks
Article ID: 191271 - Last Review: May 17, 2007 - Revision: 3.3

PRB: ERR "ADO Could Not Find The Specified Provider"

View products that this article applies to.
This article was previously published under Q191271

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SYMPTOMS

The following error message occurs when trying to connect to SQL Server using ActiveX Data Objects (ADO):
ADODB.Connection error '800a0e7a'
ADO could not find the specified provider.
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CAUSE

The MSDASQL OLE DB provider is either unavailable or is not registered. This can be caused by an incomplete upgrade or a bad install of the Microsoft Data Access Components (MDAC) components.
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RESOLUTION

Here are two ways to resolve this problem:
  • Register the Msdasql.dll using the following command:
    REGSVR32 "C:\Program Files\Common Files\System\ole db\MSDASQL.DLL"
  • Reinstall the Microsoft Data Access Components used. The newest version of MDAC can be downloaded from the following Web site:
    http://msdn2.microsoft.com/en-us/data/aa937695.aspx (http://msdn2.microsoft.com/en-us/data/aa937695.aspx)
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STATUS

This behavior is by design.
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MORE INFORMATION

Steps to Reproduce Behavior

  1. Unregister "C:\Program Files\Common Files\System\ole db\Msdasql.dll" using REGSVR32 from the Command line. Here is an example:
    REGSVR32 -U "C:\Program Files\Common Files\System\ole db\MSDASQL.DLL"
  2. Try to connect to the PUBS database on SQL Server using ADO.
RESULTS: The error occurs.
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APPLIES TO
  • Microsoft Data Access Components 1.5
  • Microsoft Data Access Components 2.0
  • Microsoft Data Access Components 2.1
  • Microsoft Data Access Components 2.5
  • Microsoft Data Access Components 2.6
  • Microsoft Data Access Components 2.7
  • Microsoft Data Access Components 2.8
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Keywords: 
kbdatabase kbprb KB191271
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