Excel Calculation Services Won't Start

By James|June 20, 2013|

The great thing about building out your own farm is ... you know how it was built. Sadly, if you take a new job, chances are you will be inheriting someone else's mess. Such was the case today :-(

A user was trying to use the Excel Web Access web part to display an Excel spreadsheet chart on their site. The web part was throwing a 'Unable to process the request ... Please try again ...' error. Checked Excel Calculation Services service application configuration in Central Administration, everything looked good. Digging through the ULS logs showed some interesting entries like

ExcelServerApp.ClearTempPath: Failed to create the Ecs temp path.
EngineInterop::LoadDll: Failed to load our engine (xlsrvol.dll)

To find these, I looked for 'Excel Services Application service is starting' and the errors would directly follow. For me, the fix was:

  • Start IIS Manager on the server running Excel Calculation Services (ECS)
  • Expand the server and sites nodes
  • Select the site running ECS (SharePoint Web Services in my case)
  • Choose the Authentication icon in the IIS area
  • Choose ASP.NET Impersonation in the list and disable it

 

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