Hi I'm Using MSN Messenger for Mac, I have the latest version. And Mac OS 10.5.8.

Everything thing was fine a few weeks ago, but now i can no longer sign out of MSN using the option Sign out. I have to force quit the application. When i try to sign out, the following error message appear: Impossible to sign out of msn.. then this message dissapear after like 3 or 5 secondes, don't even have time to read the whole thing, then something new appear, saying Cookie is blocking it. I tried to reset everything in my browser, including safari and firefox. Problem persist, and this happend on every msn account registreted on this computer.

Thanks

Hey LessAngeless! 
 
You need to contact the support group of MSN Messenger for help.  Visit the link below to access their support page:
 
http://windowslivehelp.com/solutions/newvisitor/archive/2009/02/04/how-to-get-support-for-your-non-hotmail-products.aspx
 
Once you’re on the page, click the link beside Windows Live Messenger.  Under Which Version of Messenger are you running? dropdown menu in the e-form, select Mac Messenger [All Versions]. 
 
FYI: I’ve moved your post to the Non Hotmail Questions (Referral) forum.