File Extension MSO

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    Microsoft Organization Chart Chart Format
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Have you encountered a problem with a MSO file? Don’t you know which program opens a file with this extension? You will find all the information you need about working with a MSO file here. In the further part of this page we have added a list of programs that should open your MSO file. It is enough you choose a proper application for your operating system, download and install it.


Files with the extension MSO contain an inline e-mail attachment. This means that they contain a Microsoft Word 2000 document that was sent as an Outlook HTML message with Word. The file, which is mostly Oledata.Mso contains all the necessary data to correctly display the document within Outlook.

If the message is displayed on a system that does not have Outlook 2000 installed, the oledata.Mso file appears as an attachment.

The file can not be used or edited on its own and should not be deleted as this can make the corresponding message unreadable.

Programs which can open a MSO file

How to open a MSO file? Advice and guidance

Absolutely most often appearing reason that prevents you from opening the MSO file is the lack of a proper application to support it in your operating system. It is notably the first thing you need to address. When one of the programs to support a MSO file from the list is already installed, you can try to rerun the file. The system should display a message asking you to choose a primary application to support MSO files. At this point we are looking for disk space where the application was installed in and we can link it with a MSO file. Since then, our operating system will use the selected program to support all MSO files.

Other issues

Despite the described problem with MSO there may be many more problems. If the existing operations were not effective, get involved with the following matters:

- verify that the MSO file is not damaged and that it has been downloaded or copied in whole
- verify that the file has a file extension that has not been intentionally changed (for example, if it do not contain other information than its extension suggests)
- make sure again whether the MSO file type is linked in the operating system with a proper program
- make sure that the file is not infected with a virus and you have up to date software and drivers.

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