Opening MSO files
Did your computer fail to open a MSO file? We explain what MSO files are and recommend software that we know can open or convert your MSO files.
What is a MSO file?
Files that contain the .mso file extension are created by the Microsoft Office 2000 application. When you send an HTML message with a Microsoft Word 2000 attachment using the Microsoft Outlook email application, the message will attach an Oledata.mso file to the email message. This allows users who are not using the Outlook email application to view the file correctly even though they do not have the same software.
The .mso file extension is also created by the Microsoft Organization Chart tool. This tool allows users to create and edit organizational charts in Microsoft Office 2003. The charts that are created are saved with the .mso file extension.
Software that will open, convert or fix MSO files
Try a universal file viewer
In addition to the products listed above, I would suggest that you try a universal file viewer like Free File Viewer. It can open over 200 different types of files - and very likely yours too! Download Free File Viewer.