15 Dec

I checked the date on my computer and it’s current. I checked .NET Messenger Service status and it says all systems are stable and running.

After a little checking, I found what is causing the error code 80048820 and extended error code 80048439.
If the .NET service is stable and running and the system date is correct, the problem should be either the messenger got corrupted or the connection problem. Uninstall and reinstall Windows Live Messenger still didn’t allow me to connect. It must be the connection problem. Windows Live Messenger uses Internet Explorer connection settings to connect. If you’ve set to use proxy on Internet Explorer, Windows Live Messenger will also use the same proxy on Internet Explorer.
Then I remembered earlier today I was using a USA proxy in Internet Explorer to do some test and I forgot to remove the settings. Usually an open proxy don’t stay online for very long. I uncheck to stop using the proxy and voila!, I am able to connect to Windows Live Messenger without getting the 80048820 error code with 80048439 or 8004840f extended error code.
To disable using proxy in Internet Explorer:
1. Click Tools from Internet Explorer menu bar
2. Select Internet Options
3. Go to Connections tab
4. Click on LAN settings button
5. Uncheck “Use a proxy server for your LAN”

[tags]80048820, 80048439, MSN, error, 8004840f, Windows Live Messenger[/tags]
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Weeelll,. i did the total oposite of what you wrote in the guide, becouse it somehow already was unchecked, and now i finally can use msn again! Now i just need some friends to chat with :/
But thanks for leading me towards the light =)
The first and easiest thing to check is the time and date on the computer. Make sure it’s correct. I’d also check the time zone on the “Date and Time Properties” window and on the “Internet Time” tab check the “Automatically synchronize with an Internet time server” box, and click OK.
Good Luck!
Ha, the date thing worked. I never even noticed that my clock was set to January 2nd 2001!
thanks! it works!
I couldn’t log into live on my mothers laptop, tried 4 a day. Then i saw that the date was set 1 month ahead, once i changed that i was in next login.. Thank you all 4 the insite
THANKS! This worked for me :-)
Strange though, how that option in IE suddenly got checked…
worked like a charm, my god, been trying for ages, called HP, ISP’s, even Live Supprt, no help, this –un-check proxy setting in LAN solved it… wow.. thanks a million… god bless u…
Windows Live Messenger 80048820 and Extended 80048439 Error Code
Thanks!! You save my life xD, but I would never have thought to do that.
Thank you so much :D.