Filename Extensions
If you are seeking information about file extensions, then you are in the right place at right time.

Details of extension .mco

1 extension(s) and 0 alias(es) in our database

Below, you can find answers to the following questions:

  • What is the .mco file?
  • Which program can create the .mco file?
  • Where can you find a description of the .mco format?
  • What can convert .mco files to a different format?
  • Which MIME-type is associated with the .mco extension?
Live Messenger Content Object .mco file icon

Live Messenger Content Object

MCO file is a Live Messenger Content Object (Wink).
Category: Application files
Application: Live Messenger
Program name: -
Mime-type: application/octet-stream
Magic bytes (HEX): -
Magic string (ASCII): -
Related extensions:
MSN Messenger Contact List
Live Messenger Custom Emoticon Image
Live Messenger Custom Emoticon Metadata
Live Messenger Content
Live Messenger Contacts Data

Other types of files may also use the .mco file extension. If you have helpful information about .mco extension, write to us!

Is it possible that the filename extension is misspelled?

We found the following similar extensions in our database:

Microsoft Office Rendering Data
microC Binary File
SmartCAM Macro File
Windows Media Center Link
OCaml Compiled Bytecode
Perl ModInfo Descriptor
ZX Spectrum Multicolor Image
Cult3D Object
GNU Gettext Machine Object File

The .mco filename extension is often given incorrectly!

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

mcl (36), mso (13), cmo (1), mxo (1), moc (1), mfo (1), mcp (1), mck (1), mc (1), jco (1), co (1), nco (1), mo (1), mdo (1), mci (1)

Can't open a .mco file?

If you want to open a .mco file on your computer, you just need to have the appropriate program installed. If the .mco association isn't set correctly, you may receive the following error message:

Windows can't open this file:

File: example.mco

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 from a list of programs that are installed on your computer.

To change file associations:

  • Right-click a file with the extension whose association you want to change, and then click Open With.
  • In the Open With dialog box, click the program whith which you want the file to open, or click Browse to locate the program that you want.
  • Select the Always use the selected program to open this kind of file check box.

Supported operating systems

Windows Server 2003/2008/2012/2016, Windows 7, Windows 8, Windows 10, Linux, FreeBSD, NetBSD, OpenBSD, Mac OS X, iOS, Android

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