I've just started using QGIS 2.0 after using 1.8 for sometime. However I'm having an issue getting a SQL Server connection, I'm using the same settings as as used in 1.8 but I keep gettting an error when I try to 'Test Connection' and I don't understand why. Here's the error:

'[Microsoft][ODBC Driver Manager] Data source name not found and no default driver specified QODBC3: Unable to connect'

  • I'm having this too, but I'm on Ubuntu and wonder if I need the SQL server client tools loaded... what OS are you on? Commented Dec 13, 2013 at 22:35

1 Answer 1


I found a simlar Q&A: https://stackoverflow.com/questions/283460/error-microsoftodbc-driver-manager-data-source-name-not-found-and-no-defau

To quote SQLRyan:

If you're working with an x64 server, keep in mind that there are different ODBC settings for x86 and x64 applications. The "Data Sources (ODBC)" tool in the Administrative Tools list takes you to the x64 version. To view/edit the x86 ODBC settings, you'll need to run that version of the tool manually:

%windir%\SysWOW64\odbcad32.exe (%windir% is usually C:\Windows) When your app runs as x64, it will use the x64 data sources, and when it runs as x86, it will use those data sources instead.

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