In this post we will discuss about an error message which usually comes after you upgrade my SharePoint site to SharePoint 2010 site.
The workbook cannot be opened because it is not stored in an excel services.
By default the setting in the library is set to "open the file in browser".
Change the Library settings to open files in Client application.
-Open your document Library
-Click on "Library" under "Library tools" (See screenshot)
-To the extreme right on the ribbon, please click on "Library settings".
-Click on Advanced settings under General settings.
-In the settings for "Opening Documents in the Browser"
-Change the radio button and select Open in the client application.
You must change this setting in all the document libraries.
Applies to: SharePoint Foundation 2010/SharePoint Server 2010.