DOCUMENT:Q164819  04-MAY-2001  [visualc]
TITLE   :FIX: Problems Using Database Classes with Jet 3.0 under NT 4.0
PRODUCT :Microsoft C Compiler
PROD/VER:winnt:4.0,4.0a,4.1,4.2,4.2b
OPER/SYS:
KEYWORDS:kbDAOsearch kbDatabase kbMFC kbODBC kbVC

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The information in this article applies to:

 - Microsoft Visual C++, 32-bit Editions, versions 4.0, 4.1, 4.2, 4.0a, 4.2b, on platform(s):
    - the hardware: Intel x86 
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SYMPTOMS
========

Using a Microsoft Access 7.0 data source under Windows NT 4.0 may cause the
following problems:

1. An MFC Database (ODBC, DAO) application may crash upon exit, with the
   following error message:

   "The instruction at 0x04210085 referenced memory at 0x04210085. The memory
   cannot be read."

   The exact addresses may be different.

2. Opening and closing a CDatabase object in a loop may cause the following
   error:

   "Unhandled exception in <appname.exe> .... Access Violation"

3. Class Wizard may crash while creating a recordset based on an Access data
   source.


RESOLUTION
==========

To obtain the updated version of MSJT3032.DLL version 3.00.3213 that fixes the
problem, see the following articles in the Microsoft Knowledge Base:

   Q151186 ACC95: Updated Jet DLLs Available on MSL

   Q143163 PRB: Problems Running Microsoft Jet 3.0 on Windows NT 4.0

   Q156298 FIX: Error on Disconnecting from ODBC Desktop Drivers

STATUS
======

Microsoft has confirmed this to be a bug in the Microsoft products listed at the
beginning of this article. This bug was corrected in the ODBC drivers included
with Visual C++ 5.0 and the ODBC Drivers included with Office 97 Value Pack.

Additional query words: kbVC400bug

======================================================================
Keywords          : kbDAOsearch kbDatabase kbMFC kbODBC kbVC 
Technology        : kbVCsearch kbAudDeveloper kbVC32bitSearch
Version           : winnt:4.0,4.0a,4.1,4.2,4.2b
Hardware          : x86
Issue type        : kbbug
Solution Type     : kbfix

=============================================================================

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