"HTTP 500.100 - Internal Server Error" When You Try to Access a Provider

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This article was previously published under Q278604

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SYMPTOMS

When you attempt to access a provider from within an Active Server Pages (ASP) page, you may receive the following error in the browser:

HTTP 500.100 - Internal Server Error - ASP error Internet Information Services

If friendly HTTP error messages are disabled, you may receive the following error message when you attempt to run the ASP page:

ADODB.Connection (0x800A0E7A)
Provider cannot be found. It may not be properly installed.
/Nwind.asp, line 10

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CAUSE

This error occurs because a dynamic-link library (DLL) that is required by the Microsoft Data Access Components is not registered.

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RESOLUTION

NOTE: This resolution uses a SQL Server OLE Provider DLL (Sqloledb.dll) as an example. Because the unregistered DLL may vary based on the OLE DB Provider that you are using, modify step 2 accordingly.

To resolve this problem, reregister the faulty DLL as follows:

At a command prompt, change to the C:\Program Files\Common Files\System\Ole DB folder.
At a command prompt, type the following command:
regsvr32 sqloledb.dll
You should receive confirmation that the DLL is registered successfully.

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MORE INFORMATION

The following list names the possible providers and their pertinent DLLs:

Microsoft ISAM 1.1 OLE DB Provider
Provider=Microsoft.ISAM.OLEDB.1.1
C:\WINNT\System32\Msisam11.dll
C:\WINNT\System32\Msuni11.dll

Microsoft Jet 3.51 OLE DB Provider
Provider=Microsoft.Jet.OLEDB.3.51
C:\Program Files\Common Files\System\OLE DB\Msjtor35.dll
C:\WINNT\System32\Msjt4jlt.dll
C:\WINNT\System32\Msjter35.dll
C:\WINNT\System32\Msjint35.dll

Microsoft Jet 4.0 OLE DB Provider
Provider=Microsoft.Jet.OLEDB.4.0
C:\WINNT\System32\Msjetoledb40.dll
C:\WINNT\System32\Msjet40.dll
C:\WINNT\System32\Mswstr10.dll
C:\WINNT\System32\Msjter40.dll
C:\WINNT\System32\Msjint40.dll

Microsoft OLE DB Provider for Indexing Service
Provider=MSIDXS.1
C:\WINNT\System32\Query.dll

Internet Publishing
Provider=MSDAIPP.DSO.1
C:\Program Files\Common Files\System\OLE DB\Msdaipp.dll
C:\WINNT\System32\Wininet.dll
C:\WINNT\System32\Shlwapi.dll
C:\WINNT\System32\Version.dll
C:\WINNT\System32\Lz32.dll
C:\WINNT\System32\Shell32.dll

Microsoft OLE DB Provider for ODBC Drivers
Provider=MSDASQL.1
C:\Program Files\Common Files\System\OLE DB\Msdasql.dll
C:\Program Files\Common Files\System\OLE DB\Msdatl2.dll
C:\Program Files\Common Files\System\OLE DB\Msdasqlr.dll
C:\Program Files\Common Files\System\Msadc\Msadce.dll
C:\Program Files\Common Files\system\Msadc\Msadcer.dll
C:\WINNT\System32\Odbc32.dll
C:\WINNT\System32\Comdlg32.dll
C:\WINNT\System32\Odbcint.dll

Microsoft OLE DB Provider for OLAP Services
Provider=MSOLAP.1
C:\Program Files\Common Files\System\OLE DB\MSOLAP.DLL
C:\Program Files\Common Files\System\OLE DB\Msolapr.dll
C:\Program Files\Common Files\system\OLE DB\msdaosp.dll
C:\WINNT\System32\Security.dll
C:\WINNT\System32\Sqlwoa.dll
C:\WINNT\System32\Sqlwid.dll
C:\WINNT\System32\Nddeapi.dll
C:\WINNT\System32\Winspool.drv
C:\WINNT\System32\Msv1_0.dll

Microsoft OLE DB Provider for Oracle
Provider=MSDAORA.1
C:\Program Files\Common Files\System\OLE DB\Msdaora.dll
C:\WINNT\System32\Mtxoci.dll

Microsoft OLE DB Provider for SQL Server
Provider=SQLOLEDB.1
C:\Program Files\Common Files\System\OLE DB\Sqloledb.dll
C:\WINNT\System32\Dbnmpntw.dll

MSDataShape
Provider=MSDataShape.1
C:\Program Files\Common Files\System\Msadc\Msadds.dll
C:\Program Files\Common Files\System\Msadc\Msaddsr.dll

OLE DB Provider for Microsoft Directory Services
Provider=ADsDSOObject
C:\WINNT\System32\Activeds.dll
C:\WINNT\System32\Adsldpc.dll

NOTE: This is not a complete list and may have missing information. Please reference the provider that you are using for more specific information regarding errors that you may be experiencing.

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