To resolve the subject behavior on your Windows 2000, Windows XP, or later computer:

1. Close all instances of Internet Explorer.

2. Open a CMD.EXE window and run the following FixWUP_IU.bat file, without any parameters:

@echo off
setlocal
if exist %systemroot%\system32\dllcache\IUCtl.dll del /q %systemroot%\system32\dllcache\IUCtl.dll
if exist %systemroot%\system32\dllcache\IUEngine.dll del /q %systemroot%\system32\dllcache\IUEngine.dll
if exist %systemroot%\system32\dllcache\IUEnginenew.dll %systemroot%\system32\dllcache\IUEnginenew.dll
if exist %systemroot%\system32\IUCtl.dll del /q %systemroot%\system32\IUCtl.dll
if exist %systemroot%\system32\IUEngine.dll del /q %systemroot%\system32\IUEngine.dll
if exist %systemroot%\system32\IUEnginenew.dll %systemroot%\system32\IUEnginenew.dll
set IUR="%TEMP%\FixWUP_IU_%RANDOM%.REG"
@echo REGEDIT4>%IUR%
@echo.>>%IUR%
@echo \[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate\IUcontrol\]>>%IUR%
@echo "SelfUpdateStatus"=->>%IUR%
@echo.>>%IUR%
@echo.>>%IUR%
regedit /s %IUR%
del /q %IUR%
endlocal
3. Shutdown and restart your computer.

4. If the problem is resolved, exit this procedure.

5. Open Internet Explorer.

6. On the Tools menu, open Internet Options.

7. On the General tab, press Delete Files in the Temporary Internet files area.

8. Press OK and OK.

NOTE: If MSUS (Microsoft Software Update Services) is implemented, contact your network administrator.