Hi Keith,
Open Internet Explorer.
1. Click Tools, and then Internet Option.
2. Under general tab, click Delete.
3. In the next windows, check all the boxes and click on delete
4. Click the Security tab, Click Reset all zones to default level.
5. Under the Security tab, click on trusted sites, Click Sites and please add the following websites,
*.live.com
*.microsoft.com
*.hotmail.com
*.msn.com
*.passport.com
After adding all the above website click on close
6. Click the Privacy tab, select advanced, and please check the boxes 'override automatic cookie handling' and 'Always allow session cookies', click ok
7. Click the content tab, select clear SSL state.
8. Click the advanced tab, and check the boxes 'use SSL 2.0’ and 'use SSL 3.0'10. Click on apply and click ok, close the internet explorer and try to sign in to MSN.
Thanks and Regards
Mubarak