Home : File Types : MSO File (2 File Associations)

.MSO File Extension

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File Type 1Microsoft Office Macro Reference File

DeveloperN/A
Popularity
3.3 (59 Votes) Thanks for voting!
Rare Uncommon Average Common Very Common
CategoryMisc Files
FormatN/A

Unknown

File format categories include Binary, Text, XML, and Zip. The format of this file type has not been determined.

Definition

File created when saving a Microsoft Office document as a Web page; contains information about macros and OLE (Object Linking and Embedding) objects included in the original file; may be referenced by the created Web page as a style sheet.

More Information

May be viewed with a text editor, but will be unreadable since the contents are encoded.

Programs that open MSO files
Windows
Should not be opened manually
Mac
Should not be opened manually
Updated 12/20/2006

File Type 2Inline E-mail Attachment

DeveloperMicrosoft
Popularity
2.3 (14 Votes) Thanks for voting!
Rare Uncommon Average Common Very Common
CategoryMisc Files
FormatN/A

Unknown

File format categories include Binary, Text, XML, and Zip. The format of this file type has not been determined.

Definition

File sent with Microsoft Word 2000 e-mail attachments; often named "Oledata.mso;" contains information that allows the attachment to be rendered within the e-mail message.

More Information

The Oledata.mso file will appear as a separate attachment on computers that do not have Microsoft Outlook 2000 or later installed.

Programs that open MSO files
Windows
Microsoft Outlook 2016
Mac
Microsoft Outlook 2016
Updated 1/4/2008

FileInfo - The File Extensions Database

This page contains information about the .MSO extension and its known file associations. Our goal is to help you understand what an MSO file is and how to open it.

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