Problem description: When trying to log in, a few milisseconds after the main window appears, it just crashes (as if I was closing the program manually)
i have had this issue for many times there are a couple of fixes
1 wait a while the app would just fix itself
2 regedit method:
first go to HKEY_CURRENT_USER\Software\Microsoft\MSNMessenger
just change the MSNMessenger key to MSNMessenger-test or something
make sure Messenger isn’t running when you do that
this will fix it