If you want to
backup your custom stuff (although I never lose mine, but if you do) here's how:
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Click the
Start button, then click
Run.
Type in:
%USERPROFILE%\Local settings\Application Data\Microsoft\Messenger\
Press
OK. Then copy and paste the folder with your e-mail address to somewhere (e.g. desktop).
Now all your custom stuff is backed up and you can move the folder back
after you've repaired WLM.
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Repair: Go to Start > Control Panel > Add/Remove Programs > Messenger Plus! Live > Click '
Repair Messenger' and follow the instructions. Afterwards, sign-in and see if the problem is still there. If that doesn't work...
Re-install: In Add/Remove Programs, go down to Windows Live Messenger and click
Remove. Follow instructions to remove it. Restart your computer. Download and install Messenger, see if you have the same problem.
If Messenger is still doing the same thing, you're going to have to follow
CookieRevised's guide. This will
remove anything related to Messenger (including all files, registry keys, custom stuff, etc), so there should be no problems afterwards.