When using Microsoft Office 2003 or older you might have trouble opening documents created using Microsoft 2007. Earlier versions supported are from 2000-2003.
If you have a .docx, .docm, .dotx,.dotm, .xlsx, .xlsm, .xltx, .xltm, .xlsb, .xlam, .pptx, .ppam, .potx, .potm, or .pptm file, or any attachment in your email inbox but you do not have Office 2007 you will not be able to open the file, but don’t despair because Microsoft has a solution to open any of these extensions for free.
The .xlsx files is the default extension for spreadsheets, .docx for Microsoft word and .pptx for power point written in Microsoft Office 2007. The format is currently not support by GMail attachment viewer or any of the online office suites like Google Docs.
However, you can easily convert .xlsx spreadsheet to the traditional .xls format using the Microsoft Office FileFormatConverters. This will help you open, edit, and save .xlsx files in Office 2000, Office XP, or Office 2003.
The new office 2007 extensions are:
Word
XML file type Extension
Document .docx
Macro-enabled document .docm
Template .dotx
Macro-enabled template .dotm
Excel
XML file type Extension
Workbook .xlsx
Macro-enabled workbook .xlsm
Template .xltx
Macro-enabled template .xltm
Non-XML binary workbook .xlsb
Macro-enabled add-in .xlam
PowerPoint
XML file type Extension
Presentation .pptx
Macro-enabled presentation .pptm
Template .potx
Macro-enabled template .potm
Macro-enabled add-in .ppam
Show .ppsx
Macro-enabled show .ppsm
Slide .sldx
Macro-enabled slide .sldm
Office theme .thmx
Microsoft has a plug-in to correct the compatibility issue: Please click-here to download the FileFormatConverters. Please save the file to your desktop or a place where you can find it, them run the program.
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