Refresh in Power BI service gives errors

Hi haraldinti 

This eric can often come about when there is a difference in the source data. I would suggest checking where you are getting the Excel file from that the source data hasn't changed, which is then affecting refresh in the power service if you. can get a successfully to refresh in the desktop. I would then also republish the file to the service to then see if it will successfully refresh it in the service after a republish.