MS Access - SQL Server ODBC Error

I have an MS Acccess front end to SQL Server 2008R2.
All DSN configurations are set correctly. But I still get an error message when trying to open the linked tables.
Error message is "ODBC--connection to 'DB010' failed."
Any thoughts?
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Jeffrey CoachmanMIS LiasonCommented:
You get this on "all" of the linked tables?
Do these tables all have a designated Primary Keys?
kris_sk2012Author Commented:
Yes - all tables. Some tables have primary keys.
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What version of Access and is it 32 or 64 bit?
This is new or did it stop working?
And the biggest question, when you configure your odbc source there is a "Test Connection" button - have you verified this works?

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kris_sk2012Author Commented:
Thanks - you made me think why I have two ODBC configurations on Windows 7 PC. I was configuring 64 bit, but when I configured 32 bit, this worked like a charm.
They need to have the 64-bit odbc admin thing flash "64-bit" in big red letters
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Microsoft SQL Server 2008

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