In fact, this is mainly Microsoft's own Windows Live Messenger and MSN is not a good compatible windows7, so the default Windows Live Messenger icon will not be minimized to the tray area, In fact, only a small change will be able to achieve this function
The specific actions are as follows:
If Windows Live Messenger is open, turn it off first;
Then the mouse "right" click on your previous run Windows Live Messenger this program icon or shortcut, and then select the bottom of the attributes;
In the Compatibility tab, select Run this program in compatibility mode and choose Windows Vista or Windows XP in its Drop-down menu;
Click OK. It's done! Now, if you open Windows Live Messenger, it will appear in the Tray area.