As soon as your list has finished populating, you’ll want to scroll down until you find the program entitled Windows Live Essentials. Every program is listed alphabetically, so it could be close towards the bottom of your installed programs.
At this point you’ll be given the option to Repair or to Uninstall. As we’re looking to getting rid of Windows Live Messenger, you’ll want Uninstall. Afterwards, we'll be shown the list of Windows Live components that we want to get rid of.
Next you’ll be given a list of the Windows Live components you wish to remove. To remove Windows Live Messenger, put a check box next to it, as well as next to other Windows Live programs you wish to remove as well. Once you’ve finished, click Continue.