Michael Brönnimann on 16 Oct 2017 18:58:30
Depending on the response time of the data source, a data refresh may result in an unwanted "canceled" refresh due to a query timeout limit within PowerBI.
If a query does not return a part of or the whole result set within a specific time, the query is canceled by PowerBI.
I suggest the PowerBI team to increase the default timeout value or even better to make this setting available as property within the "data source credential" settings.