Because Microsoft no longer sells these legacy versions, you must find them through third-party channels:
Another stable choice for XP, offering full compatibility with the newer .xlsx file formats . Download Microsoft Excel 2011 For Xp
If you already have Office 2003 , you can download the Microsoft Office Compatibility Pack to open, edit, and save files created in newer versions of Excel . Why You Can't Use Excel 2011 Because Microsoft no longer sells these legacy versions,