Service TrustedInstaller.EXE permanently active taking up to 50% CPU resources

Anonymous
2010-06-30T06:47:56+00:00

On my machine (Windows 7, 64 Bit) the TrustedInstaller.EXE is permanently active. The amount of used CPU changes permanently. 2 seconds 0 % then up to 50% (I have a dual core) for a second then down to 0.

Rebooting the machine did not help. Also a complete Virus scan was negative.

I have monitored the process with the Process Explorer tool. I can see that the process always access the same Registry key when it gets active. The key is

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Component Based Servicing\PackageDetect\Microsoft-Windows-IIS-WebServer-AddOn-2-Package~31bf3856ad364e35~amd64~~0.0.0.

Windows for home | Previous Windows versions | Windows update

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Anonymous
2010-07-20T06:16:30+00:00

Hi Robear,

in the meantime I have found the process that was responsible for the trustedinstaller activities. It was the xenservice.exe that was installed together with the Citrix XenCenter on my machine. I have killed this process and suddenly the trustedinstaller.exe stopped its activities. So the problem is solved now because the XenCenter can work without this process and I will remove it from the auto

Thanks for your help.

Martin

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  1. Anonymous
    2016-04-11T20:42:30+00:00

    This file has prevented me from using the CD/DVD drive on the computer. I have not upgraded to another OS, my OS is Vista Home Premium, not Windows 7 or 8. I have noticed the "trustedinstaller" when right clicking, and then clicking on properties for the Computer and C:/ drives. What is it, why is it there, and how can I delete it or change rights for the file?

    I recently recovered the hard drive, and everything seems work properly except the CD/DVD drive which is preventing me from reinstalling software including Microsoft Office software. Please help!

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  2. Anonymous
    2016-03-30T23:34:26+00:00

    Thanks. Didn't notice.

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  3. Anonymous
    2016-03-30T18:29:07+00:00

    (Typographical error -- should be svchost.exe)

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  4. Anonymous
    2016-03-30T13:20:20+00:00

    How i fixed this:

    A) Disable Auto Updates from WindowsUpdate. Don't let it scan or anything.

    B) Make TrustedInstaller and WindowsUpdate's startup "manual"

    How to:

    1. WindowsKey + R. Type "msconfig" and press [Enter].
    2. Go to Services tab
    3. Find and Uncheck Windows Module Installer
    4. Click [OK].
    5. WindowsKey + R. Type “services.msc” and press [Enter].
    6. Find and Double-Click on Windows Module Installer.
    7. Change the Startup type of Windows Module Installer to Manual from Automatic. Click [OK].
    8. Right-Click on Windows Module Installer and click Stop.
    9. Find Windows Update and do the same.

    C) If the CPU is still at 50+ % open TaskManager (ctrl+shift+Esc). Go to the Performance Tab.

    Open the Resource Monitor. Click the CPU tab. Order the list by CPU usage both in the Processes and Services lists.

    If TrustedInstaller or svchost or WindowsUpdate are still using too much CPU... force stop them by right-clicking then "end process" or if they are in the service tab click on "stop".

    Note: If you force stop SvcHost your PC will freeze for a moment, Themes may flicker. Do not touch anything. Wait for it to restart itself. Once the Desktop is back to normal, you should see that the CPU is at 0%

    I recommend this only as a Last Resort. I've been having this issue re-appear on almost every update or re-install of Windows7. I've had enough of it and this is what i did every time to stop it. It's a risky move but it has not damaged anything on my PC so far. (except for the themes. But performance > looks in my opinion).

    PS: You might want to Manually prompt Windows Update to scan for updates every month or so. Just in case.

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