With PowerPivot 2012 for SharePoint 2013, thumbnails may not always generate properly in the PowerPivot gallery for non-PowerPivot workbooks (red X)

Issue Consider this scenario: You have a SharePoint 2013 environment with the PowerPivot 2012 add-in for SharePoint installed. You have non-PowerPivot workbooks in your PowerPivot gallery, and you have successfully set up scheduled data refreshes for those non-PowerPivot workbooks. When you upload the non-PowerPivot workbooks to the PowerPivot gallery, thumbnails for those workbooks are generated successfully….

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PowerPivot for SharePoint - Gallery Thumbnails Not Rendering

Many customers have reported after uploading a workbook to the PowerPivot Gallery, the thumbnails are not rendering: Snapshots will not work if you have chosen to open the workbooks in the Client application. To remedy this, follow the below instructions: To set the default open behavior for site collections In the SharePoint site collection, click…

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