The workbook may be in an unsupported file format, or it may be corrupt error in Sharepoint 2010 when trying to open Excel

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  The workbook that you selected cannot be opened.
  
  The workbook may be in an unsupported file format, or it may be corrupt.

  Would you like to try and open this file in Excel?

  I am getting this error in sharepoint 2010 for two excel files in one environment. these files work fine in other environment. 

  any help?

  Friday, January 31, 2014 1:54 AM