Did you find or received MSO file and your computer failed to open it? Below we will explain what is MSO file extension and how you can open it.

What is a MSO file ext?

The .MSO file extension is created when an email was sent which had been written with an inline attachment that had been drafted using Microsoft Word 2000. If you then try to open this email without using Outlook 2000 (or possibly later) you will find an additional attachment called oledata.mso. This contains additional information to allow other e-mail applications to view the e-mail correctly.

How to open a MSO file?

In most cases your computer should know what software program should be used to open different file types and extensions like MSO. When you double click on the MSO file format, it should open with appropriate software program. If you downloaded or received MSO files for the first time and your system failed to open it then try free file viewers available on the internet after doing enough research not to fall prey to malware.

How to fix errors with MSO files

Scan the file
Before trying to open MSO files on your Windows make sure that it is safe to do so by running through antivirus scanner.
Update
Unable to open MSO files with the associated software program or see an error than try updating the associated software
Do not
If none of the applications in your Windows were able to open MSO file do not change file extension because by changing file extension you are corrupting the file. In case you already changed the extension you can revert it back to MSO by renaming the file. Incorrect associations are the cause of many MSO file errors.

Finally, if Windows is unable to open file extension MSO you may have registry related errors or may not have the appropriate program installed. We strongly recommend that you run a registry scan.

You are currently viewing the detail page for MSO file ext. This page contains a detailed description of the MSO file type, software tools to help resolve file association errors in the Windows registry together with relevant system utility applications and other related information.