There is not enough information in the post to determine a cause, however see if these videos can help:
Note: The ODBC Connector Pack as described in one of the videos IS NOW PART of Qlik Sense.
I think between these two videos you will figure it out - note in one of the videos I show how to test the ODBC connection with Excel - so you can rule out any Qlik product issue.
let us know how you do.
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