From the Power BI service I was able to connect successfully to an Excel file (xlsx) on OneDrive for Business, but when I tried to refresh the file a few minutes later I got the error:
"Data source error: Unable to refresh the model (id=xxxxxxx) because it references an unsupported data source"
How is it possible that I just connected to the source and was able to use the data, then minutes later it is suddenly unsupported and can no longer refresh?