Consider the following scenario:
- You have a computer that has Microsoft SQL Server 2012 PowerPivot for Microsoft SharePoint 2013 installed.
- You upload a PowerPivot workbook to a PowerPivot gallery.
- You schedule data refresh for the PowerPivot workbook.
- You make some modifications to the PowerPivot workbook, and then you save the changes.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.