Configure Excel Calculation Services on SharePoint 2010

Sometime we can’t open excel file in SharePoint pages. Looking event viewer you see “There was an error in communicating with Excel Calculation Services”. If this is happened, following steps:

- Open IIS then go to “SharePoint Web Services Root” application pool

- Verify that Identity property of this application pool is setting to the SharePoint farm account like this (It’s must be DOMAIN\account.)

Hope this help!