User credentials could not be delegated RRS feed

  • Question

  • I have created a PowerPivot workbook and uploaded it into the PowerPivot Gallery. I can see the workbook initially, but if I try and slice the data I get the following error message:

    "The data connection uses Windows Authentication and user credentials could not be delegated. The following connections failed to refresh: PowerPivot Data"

    This install is SharePoint 2010 on a single machine (Windows 7) running SQL Server 2008 R2.

    any thoughts?

    Monday, July 19, 2010 2:34 PM