i get an error code (4000FFFF) when updating, also keeps offering same update after saying update su

[AWS]

i get an error code (4000FFFF) when updating, also keeps offering same update after saying update successful.
I am on windows vista home premium and the update i keep getting offered to install is:


 Windows Vista Service Pack 1 (KB936330)

Installation date: ‎12/‎02/‎2013 16:13

Installation status: Successful

Update type: Important

Windows Vista Service Pack 1 (SP1) is an update to Windows Vista that addresses key feedback from our customers. Windows Vista SP1 addresses specific reliability and performance issues, supports new types of hardware and adds support for several emerging
standards. After you install this item, you will have to restart your computer.

More information: 
http://technet.microsoft.com/en-us/windowsvista/bb738089

More information: 
http://support.microsoft.com/kb/936330

This is the update that gave me the error report::::



Definition Update for Microsoft Security Essentials - KB2310138 (Definition 1.143.2135.0)

Installation date: ‎12/‎02/‎2013 16:15

Installation status: Failed

Error details: Code 8000FFFF

Update type: Optional

Install this update to revise the definition files that are used to detect viruses, spyware, and other potentially unwanted software. Once you have installed this item, it cannot be removed.

More information: 
http://go.microsoft.com/fwlink/?LinkID=154739

More information: 
http://go.microsoft.com/fwlink/?LinkID=154739



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