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Article ID: 132766, created on Jun 11, 2018, last review on Jul 14, 2018

  • Applies to:
  • Operations Automation


Customer would like to use the 64-bit version of MySQL ODBC 3.51 (IIS website of legacy Windows hosting subscription) driver for connection between APS.NET application and MySQL database. The following setting is set for IIS application pool:

Enable 32-Bit Applications = False

Moreover, Control Panel\All Control Panel Items\Administrative Tools\ODBC Data Sources (64-bit) snap-in crashes on attempt to use the Test button with customer's DSN details entered.

Windows event viewer error at crash:

Problem signature:
  Problem Event Name:   APPCRASH
  Application Name: odbcad32.exe
  Application Version:  6.3.9600.16384
  Application Timestamp:    5215f2d8
  Fault Module Name:    myodbc3.dll
  Fault Module Version:
  Fault Module Timestamp:   4925e0c0
  Exception Code:   c0000005
  Exception Offset: 00000000000b6a63
  OS Version:   6.3.9600.
  Locale ID:    3082
  Additional Information 1: ca3c
  Additional Information 2: ca3c599cec7fb39385d4e6a024733271
  Additional Information 3: d59d
  Additional Information 4: d59dfe93ec262cbf88c656d0721cb972


Faulting application name: odbcad32.exe, version: 6.3.9600.16384, time stamp: 0x5215f2d8
Faulting module name: myodbc3.dll, version:, time stamp: 0x4925e0c0

The HTTP Filter DLL C:\Windows\System32\myodbc3.dll failed to load.  The data is the error.

Could not load all ISAPI filters for site 'WEBSPACE_00... - DOMAIN (...)'.

The same Test button operation, performed in the 32-Bit snap-in (ODBC Data Sources (64-bit)) does not crash the application and works correctly.


The failure is not related to Windows Shared Hosting module directly, pure OS issue.


Contact Microsoft support.

Note: Avoid installing other MySQL ODBC driver versions (5.1.x and later) - it is not officially supported - refer to Supported ODBC-MySQL Driver for Windows Versions.

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