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

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

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.

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)

This behavior is by design.

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.