Vista - Windows Live Mail Problem

Hello,
I am having an error from some days in Windows Live Mail.
Whenever i Synchronize OR open my Windows Live Hotmail Account Message it gives me an error in the Bottom Pane that
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Message could not be displayed
Windows Live Mail encountered an unexpected problem while displaying this message. Check your computer for low memory or low disk space and
try again.
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and a Dialogue Box that says
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Windows Live Mail could not download the requested message. To send and receive messages in your Hotmail account, go to http://hotmail.live.com on the Web, or try again later. To get help from Windows Live Customer Support, go to http://support.live.com and click Windows Live Mail in the list of services.
Subject 'Hello Dear'
Server Error: 0x8000FFFF
Server: 'http://mail.services.live.com/DeltaSync_v2.0.0/Sync.aspx'
Windows Live Mail Error ID: 0x8000FFFF
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PLEASE HELP
THANKS