Windows 10: Windows Modules Installer Worker uses up to 70% CPU during working hours

Discus and support Windows Modules Installer Worker uses up to 70% CPU during working hours in Windows 10 BSOD Crashes and Debugging to solve the problem; I'm having a recurring issue with Windows Modules Installer Worker using up to 70% of CPU.This happens during 'working hours' when Windows Update is... Discussion in 'Windows 10 BSOD Crashes and Debugging' started by ilozen2, Mar 12, 2025 at 11:27 PM.

  1. ILOZEN2
    ilozen2 Win User

    Windows Modules Installer Worker uses up to 70% CPU during working hours


    I'm having a recurring issue with Windows Modules Installer Worker using up to 70% of CPU.This happens during 'working hours' when Windows Update is NOT supposed to install any updates.Happens on two separate machines I have: win 10 and win 11.

    :)
     
    ilozen2, Mar 12, 2025 at 11:27 PM
    #1
  2. MARIE AVE
    Marie Ave Win User

    Windows Modules Installer Worker - high CPU usage

    Hi Gregory,

    The Windows Modules Installer Worker is a background application that checks for new updates from the Windows server and install them in your computer. It's task takes high usage of CPU that causes load on the system especially when Windows Update is running.

    We recommend that you check the following first:

    • if your device is running the Scheduled Automatic Maintenance
    • if the Windows Update is running and installing
    You may check the resolution provided by TnTzzz on this thread.

    Update us with the results.
     
    Marie Ave, Mar 12, 2025 at 11:28 PM
    #2
  3. ACELYN ALC
    Acelyn Alc Win User
    Windows Module installer worker  with high cpu

    Hi Kelly,

    On a Windows 10 PC, the CPU fan sometimes runs very fast and makes noise because of Windows Module Installer Worker occupies more than 50% of the CPU.

    Let us isolate the issue by changing Windows update to manual mode. Follow the steps below and see if it helps:

    • Press Windows key + R and type services.msc.
    • Search for Windows Modules Installer.
    • Double click the Windows Module Installer.
    • Change the Startup type to Manual.
    • Go to Settings and select Update &
      security.
    • Click on Windows Update.
    • Click on Advanced options and change Automatic (recommended) to Notify to schedule restart.
    • Reboot your PC.

    Please do get back to us for further assistance.
     
    Acelyn Alc, Mar 12, 2025 at 11:28 PM
    #3
  4. MICHAEL GALL
    Michael Gall Win User

    Windows Modules Installer Worker uses up to 70% CPU during working hours

    How to fix high CPU usage by Windows Modules Installer Worker?

    Hi Abhilash,

    For us to isolate your concern with high CPU usage by Windows Modules Installer Worker, we would like to know the following:

    • Is this the first time you experienced the issue?
    • To make sure that we have not missed on anything, what troubleshooting steps have you done so far?
    • Have you checked in safe mode if it's the same?

    We look forward to your response.
     
    Michael Gall, Mar 12, 2025 at 11:28 PM
    #4
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Windows Modules Installer Worker uses up to 70% CPU during working hours

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