You will find many programs on the internet that claim to disable Windows Messenger. Simple put, why risk downloading a virus at the same time when the manual process is so easy. Here’s how:
:: Option 1 ::
You can download a program from GRC.com (reputable) called Shoot The Messenger. Simply run the program to disable Windows Messenger.
:: Option 2 ::
1. Click the Start Menu and click Run.
2. type the following command:
RunDll32 advpack.dll,LaunchINFSection %windir%\inf\msmsgs.inf,BLC.Remove
You may be required to restart Windows.
NOTE: Windows Messenger should automatically be disabled by Windows XP Service Pack 2. If it is not, follow a choice above.