File Extension Library

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.MCO File Extension

  • Developer by: Microsoft
  • Category: Misc Files

What are .MCO files and how to open them?

Can't open .MCO file? Are you wondering what it contains? On our site we will explain to you what this file is, what it is used for and what software opens the .MCO file.

What is a .MCO file extension?

.MCO file extension is created by Microsoft. .MCO has been classified as Misc Files.

.MCO is Live Messenger Winks File

Contains Flash-based animations, called Winks, that can be sent using Windows Live Messenger (formerly MSN Messenger); similar to sending an emoticon, but can be a much larger animation.

Winks may be installed using Messenger Jump! MSN Winks Installer or MSN BackUp.

NOTE: Windows Live Messenger was discontinued in 2013 and has moved to Skype.

How to fix problems with .MCO files

  1. You need to update the application that you normally use to open .MCO files. Only the latest version of the software supports the current .MCO file format
  2. You need to check the .MCO file for viruses. To do this, you need to scan it with a popular antivirus (Norton, Nod32, Kaspersky, Dr.Web, etc.)
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