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Wuauclt.exe Memory And CPU Usage

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Wuauclt.exe high Memory CPU

BONNIE LOFGRENTOMKO asked on January 21, 2013. Status: Answered & Closed.

Wuauclt.exe Memory And CPU Usage

» I have a problem with wuauclt.exe. It activates about every 20 minutes and completely stalls all other activity on my computer, using 90% - 100% of my CPU. If I go to the Task Manager when wuauclt.exe is running and I manually stop the process, my CPU usage immediately drops right back down. I don't want to delete wuauclt.exe permanently since I may want to use it as some point to get my updates. Is there anything else that I can do, and if not, how do I delete wuauclt.exe?

Best Answer

» The Automatic Update service seems to be involved in this issue. When you restart your system, the Automatic Update is supposed to run, look for stuff to do and if it finds nothing to do, it should turn itself off in a "little while". It is sometimes not turning itself off or taking a very long time to figure things out and keeps runningand one popular symptom is excess HDD activity, slow response time and in Task Manager, the wuauclt.exe Process does not go away like it should when the automatic check for updates would normally be complete.

As a test to see if this is involved in your issue, you can temporarily totally disable the Automatic Updates service in XP, restart your system and see how things look with AU disabled. If things are better, you can leave it that way and not have any future problems and wait for ideas and perhaps a fix from Microsoft or you can change the way Automatic Updates are handled and leave the Automatic Update Service running.

Or it is probably due to viruses(door:Win32/Bezigate.A) infection of exe file, you can firstly do antivirus removal and then use DLL Suite to clean the aftermath.

MANSUR MAHMOUD replied on January 26, 2013

All Answers:

  1. CHARLES STURGILL replied on January 21, 2013: » You're right to not delete without information.

    Though wuauclt.exe is a normal process of updates, yours could be a number of things, even a virus causing problems. Look for and run some alternative anti-virus software too (Hit Malware for example). Make sure your not dealing with virus problems. Don't have two anti-virus programs on real time/automatic protection and don't run scans with any at the same time. But it doesn't hurt to have execute files for backup manual software in the data base. Though some programs do conflict, even if they are in manual mode, it's been an experience that malware can get by some anti-viral software, but not all, and a backup or two can be a good thing.

  2. PATRICK MATTOX replied on January 21, 2013: » Most likely it's not a virus/malware problem since I observe it on too many "healthy" systems with antivirus installed, firewalls, anti-spyware.. everything, and definitely not a low-memory problem. It seems to be the natural behaviour of wuauclt to reserve up to .5 GB RAM (in my PCs) and -nearly- all CPU time until it's finished.

  3. HUGHES INC replied on January 22, 2013: » I have a Dell Inspiron 1300 Laptop running Win XP with SP3. If I disable Automatic Updates, the system works fine. If I enable them, the hard drive light stays lit for at least 15 or more minutes continuously, and the computer is extremely, extremely slow during that time.

    I read somewhere that wuauclt.exe should only be in my computer in one location, but in my machine, it is in four places: c:386, c:windows/prefetch, c:windows/system32, and c:windows/servicepack files

    Is that a problem? Does that indicate a possible virus/trojan? I have McAfee which doesn't detect anything in the computer.

    I could set Automatic Updates to occur in the middle of the night, when I won't care about slow performance, but my system is connected wirelessly, and it automatically disconnects from the internet some time after I finish using it.

  4. BONNIE LOFGRENTOMKO replied on January 23, 2013: » This all makes no sense. I haven't changed the memory, cpu or anything else in my PC and suddenly, within the past probably month I start having this problem with wuauclt.exe and svchost.exe consuming huge amounts of memory and slowing my PC to a crawl for the first 15 or 20 minutes. What did Microsoft change that now makes these processes hog the computer? At the risk of sounding too cynical but also believing it could quite likely be, I can't help but wonder if Microsoft is trying to force people to become so unhappy with their XP systems that they run out and get a new Windows 7 system.

    The activity also sounds like it could be malware activity but if it is then no one is detecting it. I have run Malwarebytes, ESET NOD32 and Microsoft Security Essentials and none of them find anything wrong so I have to suspect Microsoft.

  5. THOMAS DODDS replied on January 24, 2013: » My computer sometimes boots up terribly slowly and in task manager it was the wuauclt.exe or the antivirus scan that always were the biggest memory hogs. I now know how to start and stop this program and hopefully with quicker startups. Another method to get to services is to right click on the "My Computer" icon and select manage and then services. I now know how to start it in the command line so thanks, this was a great informative solution...

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