I have been looking for a solution for this issue on the forum for a couple of days now. I have created a couple of reports along with connected Dashboards and published them on the PowerBI service through an Enterprise Gateway connection. The data source is a local SQL Server 2014 instance on my computer connected through Direct Query. The data source is connected and working as expected on the report and the dashboard. However when trying to enable the Q&A, it does not allow me to enable it for the data source.
Below is the outcome when I try to enable Q&A on the dataset.
I test the scenario as yours and get the same issue.
As stated in this article, currently, the Q&A for Direct Query feature is only available for SQL Server 2016 Analysis Services data sources. Moreover, the Q&A for Direct Query feature is still in preview and additional data sources supported by the enterprise gateway will be rolled out during the public preview. You can also submit an idea here about your issue.
Thanks, Lydia Zhang
Community Support Team _ Lydia Zhang If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.