Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:
322756 How to back up and restore the registry in Windows
Resolution for incorrect registry settings problem:
- Start Registry Editor (Regedt32.exe).
- Locate the following key in the registry:
HKEY_LOCAL_MACHINE\SOFTWARE\ODBC\ODBCINST.INI
Installation information for ODBC drivers is stored in this key. Make sure that all the required ODBC driver files are in the correct folder as described by the registry keys. For example, assume that you have the following information in your registry for the Microsoft Access ODBC driver:
HKEY_LOCAL_MACHINE\SOFTWARE\ODBC\ODBCINST.INI\Microsoft Access Driver (*.mdb)
Driver = C:\WINNT\System\Odbcjt32.dll
Setup = C:\WINNT\System\Odbcjt32.dll
This will cause an error if the Odbcjt32.dll file is in the C:\WINNT\System32 folder. You can modify the registry key values to C:\WINNT\System32\odbcjt32.dll to solve this problem. Also verify that the Odbcinst.ini file has the correct entries in the same way.
Any wrong value in HKEY_LOCAL_MACHINE\SOFTWARE\ODBC\ODBCINST.INI under the Setup key will cause this error.
For the SQL Server ODBC driver, the registry key, the path, and the DLLs are the following:
HKEY_LOCAL_MACHINE\SOFTWARE\ODBC\ODBCINST.INI\SQL Server
Driver = C:\WINNT\system32\SQLSRV32.dll
Setup = C:\WINNT\system32\sqlsrv32.dll
For the Microsoft ODBC for Oracle driver, the registry key, the path, and the DLLs are the following:
HKEY_LOCAL_MACHINE\SOFTWARE\ODBC\ODBCINST.INI\Microsoft ODBC for Oracle
Driver = C:\Windows\System32\msorcl32.dll
Setup = C:\Windows\System32\msorcl32.dll
Resolution for incompatible .dll files problem:
Reinstall your current version of MDAC, or install the latest version. See the "References" section of this article for more information on reconfiguring an MDAC installation. The latest version of MDAC can be downloaded from the following Microsoft Web site: