Some have reported that simply re-registering the MSXML3.DLL seems to fix the
problem.
1. Click Start.
2. Choose Run.
3. In the Run box, type: regsvr32 MSXML3.DLL
Press okay

If that hasn't helped you may need to re-registered some more files:

1. Click Start.
2. Choose Run.
3. In the Run box, type (pressing okay after each one) :-

net stop wuauserv

Repeat for the following:
regsvr32 wuapi.dll
regsvr32 wups.dll
regsvr32 wuaueng.dll
regsvr32 wuaueng1.dll
regsvr32 wucltui.dll
regsvr32 wuweb.dll
regsvr32 MSXML3.dll
regsvr32 qmgr.dll
regsvr32 qmgrprxy.dll
regsvr32 jscript.dll

net start wuauserv


--
===========================
TaurArian [MS-MVP] 2005-2006
===========================


"MMM1210" <MMM1210@discussions.microsoft.com> wrote in message
news:F007B7C1-B419-41EE-860E-948F08804422@microsoft.com...
> When i try to update windows, a message come up: Files required to use
> microsoft update are no longer installed or registered. then, it asks me if i
> want to install and register and i click yes....it appears that it is
> reqistering and installing and then when it appers to be done i try to
> install the updates again and the same message appers again....help plz