>> MSO file

MSO file format description

Many people share .mso files without attaching instructions on how to use it. Yet it isn’t evident for everyone which program a .mso file can be edited, converted or printed with. On this page, we try to provide assistance for handling .mso files.

1 filename extension(s) found in our database.

.mso - Microsoft Office Rendering Data

The MSO data files are related to Microsoft Office Outlook 2000 (or above). MSO file is a Microsoft Office Rendering Data. When sending HTML messages with an attached Microsoft Office document, the message is sent as an Outlook HTML message, not an Office Envelope message. The Oledata.mso file contains necessary information to properly render the attachment in the message in its originating program. If an HTML message is opened on a computer that does not have Outlook 2000 installed, you will see the Oledata.mso file as an additional attachment.

Microsoft Office Outlook 2000 (or above)
Data files
- / -
Microsoft Office Rendering Data related extensions:
Microsoft Access Database Lock
Microsoft Find Fast Cache
Microsoft Find Fast Status File
Microsoft Find Fast List
Microsoft Find Fast Index
Windows Photo Gallery State File

Naturally, other applications may also use the .mso file extension. Even harmful programs can create .mso files. Be especially cautious with .mso files coming from an unknown source!

Can't open a .mso file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows can't open this file:


To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select one from a list of programs that are installed on your computer.

To avoid this error, you need to set the file association correctly.

The .mso file extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

jso, lso, mco, meo, mo, mos, mqo, ms, msi, msk, msl, msp, mxo, nso, smo

Is it possible that the filename extension is misspelled?

Similar file extensions in our database:

JISO Compressed PSP ISO Image
Affymetrix Mask File
Logic Audio Project
BIAS Fringe Processor Image
Live Messenger Content Object
BrainVoyager QX Mask Data

Operating systems currently supports the following operating systems:

Windows XP/Vista, Windows 7/8, Windows 10, CentOS, Debian GNU/Linux, Ubuntu Linux, FreeBSD, Mac OS X, iOS, Android

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If you have useful information about the .mso file format, then write to us!

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