MSXML 4.0 SP2 (KB927978) - MS Update "files missing" loop

This worked for me!
(XPHome +IE7)

As per "Anton Pegan" in a similar post:

"Just re-register the Windows Update files manually:

- Start/Run, type cmd

net stop wuauserv

regsvr32 wuapi.dll /s

regsvr32 wups.dll /s

regsvr32 wuaueng.dll /s

regsvr32 wucltui.dll /s

regsvr32 wuweb.dll /s

regsvr32 msxml.dll /s

regsvr32 msxml2.dll /s

regsvr32 msxml3.dll /s

regsvr32 urlmon.dll /s

net start wuauserv

regsvr32 softpub.dll /s

regsvr32 initpki.dll /s

regsvr32 mssip32.dll /s

regsvr32 wintrust.dll /s

regsvr32 dssenh.dll /s

regsvr32 rsaenh.dll /s

regsvr32 gpkcsp.dll /s

regsvr32 sccbase.dll /s

regsvr32 slbcsp.dll /s

regsvr32 cryptdlg.dll /s

regsvr32 jscript.dll /s

Then restart your computer.

Regards,

Anton Pegan"

THANKS Anton!