The background area of the excel services dashboards have turned from white to black when opened via browser The same Excel file is good when access via the excel client application.
SharePoint 2010 with Excel 2010… Using Windows 7 with IE 8
Thanks,
SOLUTION:
Stopped the Excel Calculation Service
Started the Excel Calculation Service
Excel Calculation Service status showed Started; however, the excel services pages showed errors
Ran powershell get-spserviceinstance -server myserver and saw that the Excel Service was listed as disabled
Copied the GUID number for the Excel Calculation Service
Ran powershell start-spserviceinstance <GUID>
The service then started backup and the black background was gone! 🙂