In news7D53C7E-B8C8-4F51-8E28-BCFB025B3E9C@microsoft.com,
stuart mc <stuart mc@discussions.microsoft.com> typed:
> try to update XP sp2 on daughters pc:- finds needed updates but
> always fails with a message "update unsucessfully instaled" why?

This was posted by someone else, but it worked for me. I did the steps down
to where I indicated only.

*Note* - also outside of this - disable all running AV's, Adware monitors,
firewalls, *any programs* running in system tray when trying to update and
install from Windows updates.

Below are the steps to try:

Step 1:

Install MSI 3.1 via the following link:

<http://www.microsoft.com/downloads/details.aspx?familyid=889482FC-5F56-4A38-B838-DE776FD4138C&displaylang=en>

Please install Windows Installer 3.1, restart and try the updates again. If
possible,
please disable all firewall or anti-virus applications first.

Step 2:

Go to Start -< Run, type in Services.msc and press Enter. Please check the
following
services:

"Remote Procedure Call" (RPCSS) should be enabled, Automatic
"COM+ Event System" (EventSystem) should be enabled, Manual
"System Event Notification Service" (SENS) should be enabled, Automatic
"Volume Shadow Copy" (VSS) should be enabled, Manual
"Microsoft Software Shadow Copy Provider" (SWPRV) should be enabled, manual.

Step 3:

Go to Start -> Run, type in Reghedit and press Enter. Navigate to:

HKEY_Local_Machine\Software\Microsoft\WindowsNT\Cu rrentVersion\SvcHost

In the right pane, double-click to open the netsvcs key. Under Value Data,
add BITS
to the list of services. Click OK. Exit the registry. Restart the
system and check out Windows update again. If still fails, proceed to Step
4:

Step 4:

Click Start. Choose Run. In the Run box, type regsvr32 qmgr.dll. Click OK.
Click Start. Choose Run. In the Run box, type regsvr32 qmgrprxy.dll. Click
OK.

Step 5:

Go to command prompt (Start -> Run -> type in CMD and click OK), run the
following
command

Reg add HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Servic es\BITS\Parameters
/v
ServiceDll /t REG_EXPAND_SZ /d %windir%\System32\qmgr.dll

(All one line. Since this command is complex, please copy it and right click
on the
Command Prompt window -> Paste, then Enter.) (Extra NOTE: EXTRA IMPORTANT!!
After entering the line as far as you can in the command window...remember
where it ended, and copy the link above to the end making sure of any spaces
and then place your cursor at the place in the command window where you
stopped before and click "paste".)

Then please restart the PC and retry Windows Update

******
NOTE: I DID THE ABOVE AND THE UPDATES SEEMED TO WORK, EXCEPT FOR THE ONE
UPDATE I HAD DOWNLOADED. IT MAY BE FIXED.
******

If the above command does not work, please try the following again:

Reg add HKLM\SYSTEM\CurrentControlSet\Control\BackupRestor e\FilesNotToBackup

Restart the PC and retry Windows Update. If still no success, go to Step 6:

Step 6:

Go to C:\Documents and Settings\All Users\Application Data\Microsoft\Network

(Note: Application Data is a hidden folder, so ensure you go to My
Computer ->
Tools -> Folder options -> View, check Show hidden files/folders)

Delete the Downloader folder.

Please take your time performing the above steps
.............................

***SOME MORE TIPS IF THE ABOVE DOESN'T WORK***!!!!!
--------
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
____________________________

Good luck,

....Allen