I just installed a brand new server (well, a virtual machine) with SharePoint 2010 SP1 and SQL Server 2012 RC0, including PowerPivot and Reporting Services / Power View. The server is joined to the domain I use in our development environment. I published a workbook in the PowerPivot Gallery and my user was immediately able to connect, browse and navigate data of the Excel workbook published by SharePoint. Moreover, I was able to open it in Power View. However, other users failed the connection. After...(read more)