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.NET 2 Winforms app with ODBC connection to Sybase ASA 9 doesn't work with Win 7

Posted on 2011-09-13
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Last Modified: 2012-05-12
I have an old Winforms app (VB.NET 2003, .NET Framework 2.0) that talks to Sybase Adaptive Server Anywhere 9 via ODBC.   Has been working just fine for years with Win XP.  Client tried to install it on a new Win 7 machine and it  won't connect.  We've tried both 32 and 64 bit Win 7.  We've tested the ODBC DSN using ACCESS linked tables and it's  just fine, so the problem is my app.

It fails trying to connected to Sybase.   Unfortunately I cannot easily recomplie the app or test it in a development environment since it used some 3rd party stuff that I no  longer have - and I don't have Visual Studio 2003 running anywhere.    So I'm wondering if there is something version dependent about the .NET 2.0 ODBC provider?   All the workstations (XP) on which the app  still works do show .NET Framework 2 installed alongside newer versions.

I tried installing .NET 2 on the Win 7 32 bit machine and it refuses to install - saying that it is already there as part of the OS.  

I'm stumped.  Can anyone help?
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Question by:BobSacks
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Jacques Bourgeois (James Burger) earned 500 total points
ID: 36533680
According to the online documentation, the 2.0 version of the ODBCConnection object is not supported on Windows 7.

Give a look at the list of supported platforms at the bottom of the page. Windows 7 appears as a supported platform only from framework 3.5.

Sorry to be the bringer of bad news.
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by:BobSacks
ID: 36535492
James -

Thanks for the info.   Not such bad news.  At least I understand the problem now.   I got it to work on Win 7 32 (that turned out to be just a misnamed DSN), so I have an alternative for the client.   If they want to engage me to update the old app to 64 bit, then that's their call.
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