Opening MCO files
Did your computer fail to open a MCO file? We explain what MCO files are and recommend software that we know can open or convert your MCO files.
What is a MCO file?
Files with the .mco extension are used by the Windows Live Messenger instant messaging application. Windows Live Messenger allows users to communicate in real-time via online instant messaging technology. The MCO files used by this software contain flash-based animations that are similar to emoticons, but are animated and much larger in size. These files are commonly referred to as Winks.
Software that will open, convert or fix MCO files
Try a universal file viewer
In addition to the products listed above, I would suggest that you try a universal file viewer like Free File Viewer. It can open over 200 different types of files - and very likely yours too! Download Free File Viewer.