SharePoint 2010 Excel Services: Unable to process the request ERROR

Sometime you receive error message “Unable to process the request” as picture below:


If open the Event Viewer in SharePoint Server, you will se the exactly error message related to Excel Services as below:

There was an error in communicating with Excel Calculation Services http://SPSERVER2:32843/1d6c7449da5d4abd9e3e12d23d550738/ExcelService*.asmx exception: An error has occurred.

In this case, the workaround is restart IIS by open CMD as Administrator mode then run the IISRESET commands.

Hope this help!

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