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WLMUninstaller is free uninstaller standalone application that allows you to completely uninstall and remove Windows Live Messenger or MSN Messenger from your computer.
This application is particular useful for those who have trouble to find the uninstaller for Windows Live Messenger in the Add/Remove Programs list. You can’t find the uninstaller mainly because the location of the uninstaller has been changed for Windows Live Messenger.
Note : You can proceed to read the second half of this post to learn how to find and uninstall Windows Live Messenger from Add/Remove Programs. Else, you can just use WLMUninstaller. It will save you time.
WLMUninstaller is easy to use. You don’t have go through any installation process. It’s portable. Simply run the WLMUninstaller executable file.
To remove Windows Live Messenger or MSN Messenger from your computer, just click the “Uninstall” button from the main window of WLMUninstaller. Done! Nothing is easier than this! 
How to Uninstall Windows Live Messenger using Windows Add/Remove Programs?
Okay, you’ve learnt that Windows Live Messenger is not in the Add/Remove Programs list. Well, the uninstaller for Windows Live Messenger is there but it’s just not obvious. Confused? You must thank Microsoft because they are really good at hiding up the uninstaller.
The uninstaller is actually inside the Windows Live Essentials. In fact the uninstaller for all the other Windows Live products that you’ve installed are also inside. Now, click on its Change/Remove option. You’ll be asked if you want to Uninstall, or Repair a Windows Live program. Select Uninstall and click Continue. Next, check the “Messenger” option and click Continue.
Done! Windows Live Messenger is successfully removed from your computer.
Brilliant – solved the issue perfectly. Thx