Fixed: ‘Antimalware Service Executable’ High CPU on Windows 10

You may be in a situation where your computer is running slowly. In the hope of figuring out why you open Task Manager and find that a process named TiWorker.exe (or Windows Module Installer Worker) is causing the trouble. It uses too many system resources, resulting in high disk (and CPU) usage. At this point, you surely want to know what this process is and how to stop it from slowing down your computer.

TiWorker.exe in Task Manager

TiWorker.exe, also known as Windows Module Installer Worker, is a system process related to Windows Update. It manages the installation and removal of Windows system updates and other components. When the operating system is downloading and installing updates, or when you are running Windows Update, TiWorker.exe will take up some system resources in the background.

You should know that TiWorker.exe will cause high disk or CPU usage from time to time if you are using Windows 10. That is because Windows 10 will automatically download and install updates regularly using Windows Update. Therefore occasional slowdowns by TiWorker.exe should be considered normal.

However, if TiWorker.exe slows down your computer very often and uses an excessively high CPU or disk, you should consider it an abnormal situation. The problem usually results from Windows Update, but sometimes it can be faulty files or drivers in the system.

The following methods can help you fix your TiWorker.exe high disk usage issue on your Windows 10 computer. It is recommended that you give them a try.

  1. Install all available updates
  2. Run Windows Update Troubleshooter
  3. Restart the Windows Update service
  4. Clear Windows Update data
  5. Run an SFC scan
  6. Use the DISM tool
  7. Update drivers
  8. Install all available updates

You can install all available updates to prevent TiWorker.exe from using too many resources in the background.

  • Open the Start menu and then click on Settings.
  • In the Settings window, select Update & security.
  • Click on Check for updates. Download and install updates if there are any available.

Run Windows Update Troubleshooter

You can always run Windows Update Troubleshooter when you find problems with Windows Update.

  • a) Press the Windows logo and R keys on your keyboard simultaneously to open the Run dialog. Type “control” in this dialog and click on OK.
  • b) View Control Panel by Large icons, and then select Troubleshooting.
  • c) Select Fix problems with Windows Update under System and Security.
  • d) Follow the instructions to perform Windows Update troubleshooting in the window popping up.

Restart Windows Update service

You can try restarting the Windows Update service. This will reset Windows Update and can get it back to normal.

  • a) Press Win and R keys on your keyboard simultaneously to open the Run dialog. Type “services.msc” and click on OK.
  • b) In the list of services in your system, find and single click on Windows Update, and then click on Restart in the service description on the left. This service will be restarted soon.

Clear Windows Update files

Windows Update stores the downloaded files into a specific folder, known as SoftwareDistribution. If some of these files are corrupted, you likely face Windows update issues, including TiWorker.exe, with high CPU and disk usage. You can clear the files in this folder to solve problems of this kind.

  • a) Press Win and R keys on your keyboard simultaneously to open the Run dialog. Type “services.msc” and click on OK.
  • b) Single click on Windows Update service. This time click on Stop to disable the service.
  • c) Open File Explorer and then navigate to C:\Windows. Find and delete the folder SoftwareDistribution.
  • d) Restart your computer and see if the TiWorker.exe process has calmed down.

* After restarting your computer, the Windows Update service will be re-enabled automatically, and a new SoftwareDistribution will be created next time it checks for updates.

Run SFC scan

There may be corrupted files on your computer that lead to TiWorker.exe using too many system resources. You can run an SFC (System File Checker) scan to detect any problem files and services on your computer.

  • a) Right-click on the Start menu (Windows logo on the taskbar) and select Command Prompt (Admin) or Windows PowerShell (Admin) (if you are using a newer version of Windows 10).
  • b) In Command Prompt or PowerShell, type the command “sfc /scannow” and hit Enter.
  • c) Wait until the Scan completes.
  • d) After that, reboot your computer and see if the problem resolves.

Use DISM tool

You can also try the Windows built-in DISM (Deployment Image Servicing and Management) tool to fix Windows Update errors. This could help fix the high CPU and disk usage issue.

  • a) Right-click on the Start menu (Windows logo on the taskbar) and select Command Prompt (Admin) or Windows PowerShell (Admin).
  • b) In Command Prompt or PowerShell, type the command “dism.exe /online /cleanup-image /restorehealth” and hit Enter.
  • c) Wait for the process to complete. After that, reboot your computer and see if the problem is gone.

Update drivers

Sometimes, the Tiworker.exe process occupies too many system resources due to faulty or incompatible drivers. You will need to update the drivers on your computer to eliminate this issue.

To update drivers, using DriverSol and Outbyte Driver Updater program is an easy and credible option.

Outbyte Driver Updater will automatically recognize your system and find its correct drivers. You don’t need to know what system your computer is running, you don’t need to risk downloading and installing the wrong driver, and you don’t need to worry about making a mistake when installing:

  • a) Download and Install Outbyte Driver Updater.
  • b) Run Outbyte Driver Updater and hit the Scan Now button. The program will then scan your computer and detect any problem drivers.
  • c) Click on the Update button next to each device to download the latest and correct driver. You can also hit the Update All button at the bottom right to automatically update all outdated or missing drivers on your computer.