Windows Modules Installer Worker high CPU: Windows 8.1 / 10

What is the Windows Modules Installer Worker and why does it occupies CPU more than 50 to 70 percent? This is a common questions of many Windows users, because the problem occurs more frequently in Windows 10 and Windows 8.1. Many users suspect a malware behind the tiworker.exe, but it is not. The Windows Module Installer Worker is a Windows Service that looks for new updates and installs it to your computer. Sometimes that can cause a high CPU load and in many cases it slows down your Computer and Windows 10 respectively Windows 8.1.

Windows Modules Installer Worker what is it?

As mentioned, the Windows Modules Installer Worker with the TiWorker.exe is a systems process that looks for new Windows Updates. It prepares your computer for the installation and check frequently for new updates. Sometimes the process get messed up and this will cause in a high CPU usage and sometimes also in 100% of disk usage. We have two solutions for you which helped us to fix the problem in the past.

Solution 1: Solve high CPU usage by Windows Modules Installer Worker

  1. Press [Windows] + [R] and type services.msc.
  2. Look for the “Windows module installer” and open the Settings.
  3. Switch the start type to manual. Repeat this step for the Windows Update service.
  4. Open the Control Panel and click on Windows Update.
  5. On the left side you can see the option Change Settings. Switch it to “Check for updates but let me choose whether to download and install them”.
  6. Reboot your computer.

With this steps you set the Windows update process to manual, which means the high CPU usage by the Windows Modules Installer in Windows 10 respectively Windows 8.1 should be fixed. At least it no longer stars in the background. You set the Windows Update to manual, so you have to start the update regularly by yourself.

Solution 2; Solve high CPU usage by Windows Modules Installer Worker

We found a better and easier solutions to the high disk and high cpu usage caused by the Windows Update process.

  1. Download the Windows Update Troubleshooter and run the WindowsUpdateDiagnostric.diagcab.
  2. The tool will check the registry keys and more the resolve the problems. It will maybe take some time, so be patient and don’t close the window.
  3. Once it’s finished the tool should say “Troubleshooting has completed”.
  4. Click the close button and restart your computer.

Hope this helps. Do you have any others solutions for the high CPU problem caused by the Windows Modules Installer Worker? If yes, please leave us a comment. As mentioned we had the problem with Windows 8.1 as well as under Windows 10.

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