duplicates wuauclt.exe & c:\windows\system32\wuaueng.dll (need both?)

Hello
I am running xp pro sp3 with MSE (v. 1.77.1038.0). I had CATrust AV until a few weeks ago. I'm on a domain network. We have not required WU to run all the time.

I have issues with wuauclt.exe slow down my computer. All of a sudden, I hear the beginning of the computer running through the process and everything slows down. (5 minutes to open an email of 5 KB)

I * think * my problem is that there are 2 versions of wuauclt.exe & c:\windows\system32\wuaueng.dll on my computer. They appear as wuauclt.exe and wuauclt1.exe.  wuauclt1.exe and c:\windows\system32\wuaueng.dll files are version 5.8.0.2469.

Running the MSE analysis does not turn to the top of any spyware. I tried just to remove the old version, but they appear immediately as if the registry grows this version instead.

After reviewing the record, I see that everything related to Microsoft.Update.AutoUpdate has two entrances:
That is to say
HKEY_CLASSES_ROOT\Microsoft.update.AutoUpdate
HKEY_CLASSES_ROOT\Microsoft.update.AutoUpdate.1

Could this be the thing slow down my machine? If this is not the case, what would it be? If so how can I get rid of the duplicates offending (and shocking!)?
Thank you
Ian

I can assure you that Windows uses only the wuauclt.exe file now and it is quite normal to find a copy of wuauclt1.exe in %windows%\System32 <=this> .

It is quite normal to find wuauclt.exe in the Task Manager. Processes tab shortly after starting your computer and so he can be executed for 10 to 20 minutes later (especially if Microsoft Update [1] is your source of default update).

That being said, the current automatic updates of running in the background has not such a detrimental effect on performance (e.g., 5 minutes to open an email 5 KB) when it is executed, unless the computer is low on resources (low power).

See if the boot minimum technical troubleshooting help you nail that other background process could contribute to the slowdown.

How to configure Windows XP to start in a "clean boot" State
http://support.Microsoft.com/kb/310353

How do advanced clean boot troubleshooting in Windows XP
http://support.Microsoft.com/kb/316434

Need help? Start a new thread in this forum: http://social.answers.microsoft.com/Forums/en-US/xpperformance/threads

===================
[1] "... What are the differences between the Windows updates and Microsoft Updates?

"While Windows Update provides updates specifically for Windows, Microsoft Update expands the service to download and install updates for other software from Microsoft, such as Microsoft Office and Windows Live... »

Source: http://www.microsoft.com/windows/downloads/windowsupdate/FAQ.mspx

~ Robear Dyer (PA Bear) ~ MS MVP (that is to say, mail, security, Windows & Update Services) since 2002 ~ WARNING: MS MVPs represent or work for Microsoft

Tags: Windows

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