Can not install SP3 from downloaded file

[larryralph]

When trying to run the Win XP, SP3 downloaded file I get an error saying
“The requested lookup key was not found in any active activation context.”

When trying to use Windows update to install SP3 I get the error No.
0x87FF36B7

[Ǝиçεl]

See if the information in this MSKB article, "How to troubleshoot an
unsuccessful installation of Windows XP Service Pack 3”, helps you to resolve
the problem:
<http://support.microsoft.com/kb/950718/>
-=-

If these methods do not resolve the installation problem, you may want to
contact support. For information about how to do this, visit the following
Microsoft Web site:
<http://support.microsoft.com/contactus>

<http://support.microsoft.com/oas/default.aspx?gprid=1173>
select Windows XP | select Windows XP Service Pack 3

[PA Bear [MS MVP]]

Free unlimited installation and compatibility support for WinXP SP3 was
available from 14 April 2008 thru May 2009. Such support will cost you
US$59 (or more) per incident now.
--
~Robear Dyer (PA Bear)
MS MVP-IE, Mail, Security, Windows Client - since 2002
www.banthecheck.com

[PA Bear [MS MVP]]

Are you currently running WinXP Gold, WinXP SP1, or WinXP SP2?

Is IE7 or IE8 installed by any chance?

cf.
http://www.google.com/search?hl=en&safe=off&rls=com.microsoft:en-US&q=+site:social.msdn.microsoft.com+%E2%80%9CThe+requested+lookup+key+was+not+found+in+any+active+activation+context%22&ei=WIUNS4ihAsnBlAf-04SWBA&sa=X&oi=forum_cluster&resnum=1&ct=more-results&ved=0CAoQrQIwAA