Creating 64-bit Web Form Application project - by a2d_dev

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ID 780025 Comments
Status Closed Workarounds
Type Bug Repros 0
Opened 2/26/2013 5:55:03 AM
Access Restriction Public


Cannot run ASP 64-bit Web Form Application on Windows 7.

Exception has a place in this configuration also: MS Visual Studio 2010 Ultimate on Windows 7, MS Visual Studio 2012 on Windows 8.

The compiled 'dll' has to be exactly the 64-bit, because the database connection driver  (IBM INFORMIX ODBC DRIVER 64-bit) throw exception: ERROR [IM014] [Microsoft][ODBC Driver Manager] The specified DSN contains an architecture mismatch between the Driver and Application.

In case 64-bit Windows Forms everything is working fine.

Could you possibly help me to solve this problem?
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Posted by Microsoft on 3/1/2013 at 12:11 PM
This is likely caused by the fact that only the 32-bit version of IIS Express is launched from Visual Studio. There is an unsupported registry key override in Visual Studio 2012 to force VS to launch the 64-bit version of IIS Express, details at
Posted by a2d_dev on 3/1/2013 at 12:49 AM
I am looking forward to your reply.
Posted by Microsoft on 2/26/2013 at 10:33 PM
Thank you for submitting feedback on Visual Studio and .NET Framework. Your issue has been routed to the appropriate VS development team for investigation. We will contact you if we require any additional information.
Posted by Microsoft on 2/26/2013 at 6:50 AM
Thank you for your feedback, we are currently reviewing the issue you have submitted. If this issue is urgent, please contact support directly(