The previous version and the new October version of PowerBI desktop hangs when publishing reports to the Power BI portal. The report gets published sucessfully but the "Publishing to Power BI" dialog...
wmorris20
Helper II
Helper III continue to see this issue and neither of the two fixes resolved my situation. I downloaded the latest version today, and continue to see the hang when publishing.
My workaround was to delete the dataset within the Service before publishing. I believe it has something to do with the Live Connection to Analysis Services and having to choose the Gateway connection. While this works, it's not very acceptable, because I have to remove the dataset from the published App before being able to remove the dataset.