i can use web messenger like ebuddy without any issues and get all live contacts. but can't connect on windows live messenger. running windows xp pro

uninstalled and installed everything clean uninstall and install 3 times. same.
I cannot access Messenger from my desktop PC.  I keep getting error code: 80072f0d.  If I login in with a different account, Messenger comes right up, but when I try to login with my work account, the one that I need, I get this error every time.  This is starting to drive me crazy.  Can anyone help?
 I am unable to send or receive emails. Live says "service is unavailable". Any idea what is going on?

Error code: 0x80072eff

I am talking about WLM and the error msg  error code 81000494 which may have been answered in the past.   My WLM keeps dropping out all the time, tho all the other programs are still on line.     Is it work being done at your end, otherwise, how do I stop it dropping out?

Judy
hOW DO I ADDRESS THE SUBJECT ERROR CODE,  IT POPS UP EVERY TIME I LAUNCH WINDOWS LIVE MAIL!!!!
I had a troubleshoot when i'm trying to sign in my window live messenger.

Error code : 80048820

I tried to repair but it shown host file error.

May i know how to fix this problems?

Thank you.
I keep getting the Error Code 800488eb in Windows Live Messenger.  
I have outlook 2011 for mac. I also have mountain lion. My email works fine, but this error message keep popping up even though I can send mail without a problem.

I've tried changing my smtp settings according to the help I've found here, but I cannot find this particular error code: -8796.

I also have lion on my laptop, with the exact same account set up and am not having any issues on my laptop, just my tower.

What can I do to stop the unknown error alert that keeps popping up every time mail is checked?

Thank you.