My sister and I have both upgraded to windows 7 and have installed the latest version of messenger. It installed fine but it won't let us log in. We have tried turning off the firewall to no avail but we can sign in on the web version. Is there a way to solve this?

Naj - Please post any error messages that pop up when you try logging in.

It comes up with a message saying the firewall may be blocking it, the error code is 81000306

Naj - There's a page herewith some information that might help. While it applies to Vista, the information could help with Win 7 and Messenger.Try the steps outlined and let us know if that fixed the problem..thanks

It worked, I can now use MSN just finethank you for your help.