Inability to install service pack 2 dowloads

I downloaded service pack 2 from the microsoft updated but could not install,
Error Code: 0x8007F0CB
Try to install the update again, or request help from one of the following
resources.


Please help

0x8007f0cb STATUS_VLK_BLOCKED
The Product Key used to install Windows is invalid. Please contact your system
administrator or retailer immediately to obtain a valid Product Key.

Error Message: The Product Key Used to Install Windows Is Invalid
http://support.microsoft.com/?kbid=326904

Run the Windows XP Product Key Validation Assistant:
http://www.microsoft.com/resources/h...s/default.mspx



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===========================
TaurArian [MS-MVP] 2005-2006
===========================
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"Srinivas" <> wrote in message
news:4EA63457-21DE-42C5-830B-...
>I downloaded service pack 2 from the microsoft updated but could not install,
> Error Code: 0x8007F0CB
> Try to install the update again, or request help from one of the following
> resources.
>
>
> Please help