Solution : https://service.sap.com/sap/support/notes/1703722 (SAP Service marketplace login required)
Summary : 
      When attempting to change the view to Excel Inplace on an ALV Grid screen, users may encounter an error with a notification stating 'Volume of data cannot be processed by Excel'. This occurs when the volume of data is too large for the available RAM on the user's front-end system, leading to a failure in memory allocation by the OS, evidenced by an 'E_OUTOFMEMORY' exception. The error is specific to the data and format transfer requirements between ALV Grid and Excel Inplace views. A future correction for this issue will be available via a SAP GUI for Windows patch, details of which can be found in the "SP Patch Level" section or by checking SAP note 1053737 for expected patch delivery dates.
Key words : 
threadid=449137&tstart=0 downloading sap gui patches, /irj/sdn/sap-gui, alv grid including display, sap gui installation guide, sap gui receives, sap gui patches, alv grid screen, sap developer network, sap service marketplace, terms alvgrid screen
Related Notes : 
       
| 1458720 | XXL: Changing view to Excel Inplace on ALV Grid screen fails | 
| 1053737 | Expected release dates for SAP GUI for Windows & ITS Patches | 
| 563161 | SAP GUI, SAP ITS & SAP IGS patches on Service Marketplace | 
| 535308 | How to apply a SAP Front End patch? | 
| 330793 | Downloading patches |