At the same time this happened, the publish button within Power BI Desktop stopped publishing to web account as the data/file already exists. This always just overwritten before without any problem - this is why I now have to re-write the embedded code every time because I have to delete what is online before I can publish and the desktop BI is the only way to refresh data!!!! What a time wasting exercise. Should I drop Power BI and use some other data analysis tool? Recommendations would be grateful.
It's 2019, and I'm getting the same thing. I have three data sources (one SharePoint list in SharePoint Online and two tables out of a SPO-hosted Excel workbook). Everything works fine in PBI Desktop with OAuth2 authentication, but when I publish to PBI Online the only options I see for scheduled refresh credentials are "Anonymous" and "Windows", neither of which works.