MSO File Extension

MSO file icon
Inline E-mail Attachment
  • Developer
    Microsoft
  • Popularity
    3.6 (16 votes)

What is MSO file?

.MSO is a file format that is normally used to send an attachment in the email. If you are using MS Word 2000 and trying to send an email with attachment, then you will have this kind of file extension. These files contain the information that will allow you to open the attachment within your email that you have received. Normally you cannot open them without the proper tool, but with a text viewer you will be able to open them. Even if you open them, you won’t be able to read them or edit them as the file will be encrypted and will be impossible to decode without proper tools.  

Programs that support MSO file

We hope we helped you solve the problem with the MSO file. If you do not know where you can download the application from our list, click on the link (which is the name of the program) - you will find more information there on the location where to download the secure setup version of the required application.

What else may cause problems?

There can be more reasons which determine that you are not able to open the MSO file (apart from the lack of the proper application installed).

First - the MSO file may be incorrectly associated with the application installed to support it. In this case, you need to change this association by yourself. To do this, right-click on the MSO file that you want to edit, click "Open with" and then select the program from the list that you have installed. After this operation, the problems with opening the MSO file should be solved.

Second - the file you want to open can simply be damaged. Then, the best solution is to find a new version of given file, or download it again from the same source as before (maybe for some reason in the previous session the download of the MSO file has not been completed and it cannot be opened properly).

Do you want to help?

If you have additional information about the MSO file, we will be grateful if you share it with our users. To do this, use the form here and send us your information on MSO file.

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