How to fix Windows Modules Installer Service issues

Madalina Dinita
by Madalina Dinita
Former Managing Editor
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  • The Windows Modules Installer Service is a key Windows Update process that searches for updates and installs them on your PC.
  • Keeping your system up to date is crucial if you want to enjoy the latest Windows 10 features and security enhancements.
  • In case the Windows Modules Installer Service fails to work properly or is missing altogether, this guide will help you fix the issue.
  • This guide is part of our Windows 10 Troubleshooting Hub. Don't forget to bookmark it and make it your number one source for troubleshooting guides.
troubleshoot Windows Modules Installer Service

The Windows Modules Installer Service is an essential Windows Update system process that looks for updates and installs them on your computer. In other words, the service enables users to install, modify and remove Windows updates and optional components.

If this service is disabled, you may encounter various issues and errors when trying to install or uninstall Windows updates.

Under the Task Manager, you may find various Windows Modules Installer Service processes, such as TiWorker.exe. If you select the Details tab, you should find it there. You can also go to Start and type services.msc. Then scroll down and locate the Windows Module Installer.

 

WMI’s main process is TrustedInstaller.exe. The process is usually located at C:Windowsservicing, as you can see in the screenshot below, and it runs under Local System Account.

trustedinstaller windows 10

Its startup state is normally set to Manual.

Sometimes, the Windows Modules Installer Service is missing or fails to work. So, where can you download the Windows Modules Installer Service from in order to fix this issue? This is actually quite a common question among Windows 10 users.

Unfortunately, since the Windows Modules Installer Service is a system process, you cannot download it as a package. In case it fails to work properly or is missing altogether, you can use the solutions listed below to fix the problem.

How to repair Windows Modules Installer Service

1. Make sure that the service is running

  1. Go to Start > type services.msc > locate the service > right-click on it > go to Properties
  2. Check if the service status is ‘Stopped’windows module installer stopped
  3. If this is the case, right-click again on WMI > select Start.

start windows module installer

2. Run the Windows Update Troubleshooter

Windows 10 also features a built-in troubleshooter that you can use to fix technical issues affecting the system, including update install/removal issues.

Go to Start > Update & Security > Troubleshoot > Run the Windows Update Troubleshooter

windows update troubleshooter

3. Scan your system for malware, viruses and the like

If you computer is infected with malware or other cyber threats, this may explain why you’re experiencing WMI issues. Running a full-system scan should help you fix the problem.

If Windows Defender is your antivirus of choice, launch it and go to Virus & Threat protection. Click on Advanced scan and select Full system scan.

scan computer for virus

We also recommend you to install an anti-malware tool compatible with your antivirus for an extra layer of protection.

4. Run SFC scan

System file corruption issues may also trigger Windows Modules Installer problem. The quickest way to fix the problem is to run a System File Checker scan.

Launch Command Prompt as administrator > enter the command sfc /scannow > hit Enter.

SFC scan

There you go, we hope that this article answered your question as to where you can download the Windows Modules Installer Service. As you can see, you can’t actually download it as this is a system service that’s included in the OS install package.

FAQ: Learn more about the Windows Modules Installer Service

  • Is it safe to stop the Windows Module Installer?

You can disable the Windows Modules Installer service on your Windows 10 computer without any problems. Keep in mind that by doing this, Windows 10 will no longer install updates and you won’t benefit from the latest OS features and improvements. But you can turn the service back on at any time.

  • Why is the Windows Module Installer causing high disk usage?

When the Windows Module Installer is searching for updates or is installing the latest updates on your computer, it will automatically use additional CPU and RAM power to download and install the respective updates. The service is usually running in the background. If you notice high disk usage, this indicates the installer is actively searching for or installing updates.

  • How do I stop the Windows Modules Installer Trustedinstaller service?

To disable the Windows Modules Installer, open Services and locate the installer in the list of services. Right-click on the Windows Modules Installer and then click on Stop.

Editor’s Note: This post was originally published in January 2018 and has since been updated for freshness and accuracy.

Editor's Note: This article was originally published in January 2018 and was revamped and updated in April 2020 for freshness, accuracy, and comprehensiveness.
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