Would this work? I've no idea personally, but it seems to be around the same area as this topic.
quote:
Originally posted by CookieRevised
Fix
Delete you handshaking policy cache:
Exit Messenger completely (this means right clicking the Messenger tray icon and choosing Exit).
Open your registry editor (Start > Run > regedit.exe) and navigate to:
for Messenger 8.0: HKEY_CURRENT_USER\Software\Microsoft\MSNMessenger
for Messenger 8.1: HKEY_CURRENT_USER\Software\Microsoft\Windows Live\Communications Client
Once there, you must remove the following subkeys:
for Messenger 8.0: Policies
for Messenger 8.1: Shared
Close your registry editor and restart Messenger.