msn錯誤 80048820：您無法登入 Windows Live Messenger

Remove MSN, Reboot. Download version 8.5 MSN or older to install.
MSN Messenger 7.5.0324 for Windows
http://www.microsoft.com/downloads/details.aspx?familyid=CA6B2C02-7C1C-4E3A-8D2B-4FCEF7485C14&displaylang=zh-tw
Windows Live Messenger 8.5
http://g.live.com/1rebeta/WLMsgr85_en-us
You can use Web MSN also:
http://wwwm.meebo.com/index-ch.html
or:
http://webmessenger.msn.com/
http://www.ebuddy.com/
http://www.iloveim.com/