Hi. I have Windows XP PRO. Whenever I try to sign in to MSN Messenger, I get a popup saying "We could not sign you into MSN Messenger because there is a problem with your Microsoft Passport" "Click OK to learn more at the Microsoft Passprot Website" I click OK and it take to a screen where I have to retype my password to verify my login, so I do that and it takes me to this URL " http://messenger.msn.com/Xp/Default.aspx ". I have tried repairing MSN Messenger and I have tried uninstalling it and re installing it. There can't be anyting wrong with my passport because it works fine with Windows Messenger. MSN Messenger loads fine with my wife's passport but not mine. Thank you for your time.