Do you know what Windows Modules Installer Worker is and why it takes much space of CPU? If you don’t know, it doesn’t matter. This post will tell you all the answers to the above questions. In addition, it will provide you with 6 effective methods to resolve the issue. Pay attention to the very step of each method.

Windows Modules Installer Worker high CPU usage is a common phenomenon for people who use Windows computers. Here is a real example that people encounter. Now, it is time to find its causes and responding solutions.

high CPU usage error

About Windows Modules Installer Worker

Windows Modules Installer Worker (TiWorker.exe), a part of Microsoft operating system, is a system background program. It is applied to Windows Update (automatically) and install some installation programs released by Microsoft, fix or replace system files.

In addition, it will maintain system regularly such as deleting temporary files, managing the system disk fragmentation, disk antivirus and other optimizations according to the set time. In general, it will take a long time to start up and run the computer after newly installing Windows 8 or when the system is just booting.

This system tool will run in the background immediately when your computer connects to the internet in order to check whether there is available Windows or other programs to update.

Read here, you are possible to find no connections with the Windows modules installer worker high CPU usage issue, but it would be very obvious if you continue to read the post.

Why It Has Such a High CPU Usage?

Though Windows Modules Installer Worker has some advantages, it has disadvantages too. In particular, the Windows Modules Installer Worker high CPU usage issue is very serious.

The tool checks and installs Windows updates automatically. It occupies over 50% of your CPU.

Occupying too much CPU space can decrease the computer’s speed and affect PC performance. So, why does it have such a high CPU usage? The answer will be shown to you in the next.

Windows Modules Installer Worker will constantly access the hard disk drive when the system installs some system modules, Windows Update is downloading and installing the updated software automatically and the update installation fails, which leads to 100﹪ disk usage.

It is reported that Windows modules installer worker Win10 has the high CPU usage error from time to time, but it’s normal. It’s bad news, but the good news is that you can fix it.

If you want to fix this error, you may be interested in this post: 12 Tips for 100% Disk Usage on Windows 10 Task Manager

6 Solutions to Fix Windows Modules Installer Worker

As you know, Windows Modules Installer Worker can cause some problems, even affect your normal usage. Here comes the need of fixing it. Several methods will be given in the following part. If you are urgent to fix the issue, please read the text carefully.

You are able to try those methods one by one until you resolve the high CPU usage issue resulting from Windows Modules Installer Worker.

Fix 1: Convert Windows Installer Startup Type as Manual

Since the Windows Modules Installer Worker gives rise to serious consequences to your computer, you may want to disable or close the Windows Modules Installer Worker as soon as possible. This method is also recommended by some websites, but this action will stop Windows installation and update normally.

More importantly, once you disable the Windows Modules Installer Worker, your computer is unable to update in time and the system is more vulnerable to the threats and virus. Hence, you had better not disable or close it.

Instead, you should adjust the Windows Modules Installer Worker as manual. In this way, your computer can save power both from the CPU and the disk usage at the same time. However, since updates won’t download automatically, you can choose to update Windows manually once a week or a month.

Here are steps to adjust Windows Modules Installer Worker as manual:

Step 1: Press Windows plus R key to open the management window. Type services.msc and click OK in the pop-up window to open Windows Services.

open Windows Services

Step 2: Find Windows Modules Installer Worker in the services list at first. Then right click it and choose Properties from the drop-down menu or just double click the Windows Modules Installer Worker service.

choose properties

Step 3: Click Manual option from the Startup type list and click OK.

select manual as the startup type

Fix 2: End the TiWorker.exe Process

If you find that the error still exists after changing Windows Modules Installer Worker as manual, you can try to end the TiWorker.exe process through task manager. Windows modules installer worker end task may assist you in getting rid of the error.

Tip: If you encounter the task manager not responding issue, this article may do you a favor: Top 8 Way: Fix Task Manager Not Working Responding Windows 7/8/10.

Specific steps to fix TiWorker.exe are shown in below. You can operate step by step according to the guide.

Step 1: After clicking the Start button, choose Task Manager in the menu list.

task manager

Step 2: Drop down the procedure list in the Details tab to find the TiWorker.exe. Click End task after right clicking the TiWorker.exe file.

end task

Fix 3: Delete the SoftwareDistribution Folder

Usually, Windows downloads and stores updates in the SoftwareDistribution folder. As the downloaded updates files are unable to install correctly, those corrupted Windows Update files lead to Windows Modules Installer Worker high CPU usage. Therefore, deleting the SoftwareDistribution folder is also a way to fix the error. This method is very easy to carry out.

Follow the below steps to delete the SoftwareDistribution folder to fix the Windows Modules Installer Worker high CPU usage problem.

Step 1: Press Windows and R key at the same time, then type services.msc in the pop-up window.

Step 2: Find the Windows Update option from the services list and stop the service.

run as administrator

Step 3: Click the OK button after typing the C:\Windows\ command in the Run window.

stop Windows Update

Step 4: Scroll down the Windows files to find the SoftwareDsitribution folder, then delete it.

open Run window

Step 5: Reboot your computer and check the Windows Update. After that, you can check whether the high CPU usage is fixed. If it has no effect, you may need to try another approach.

Fix 4: Use Windows Update Troubleshooter

Windows Update Troubleshooter is a useful tool to diagnose and troubleshoot problems related to Windows updates. Though it is unable to resolve all problems, it is still a popular tool to fix certain computer issues. Besides, it is rather easy to operate.

You just need a few steps to start troubleshooting.

Step 1: Type control panel in the search window, then open the control panel page. Find Troubleshooting from the All Control Panels Items page.

delete the folder

Step 2: Choose the Fix Problems with Windows Update link under System and Security in the Troubleshooting page.

type troubleshooting

Step 3: Click Next to continue the process, then the program will start to detect problem on the computer. After the process finishes, you can check whether it resolves the Windows modules installer worker high CPU usage error.

system and security

click next

Fix 5: Run Full System Scan

System File Checker (SFC), a built-in Windows tool, is a useful program. It allows you to scan Windows system files and restore the corrupted files. Now, the guide to how to run SFC.exe to scan Windows system files and repair the lost or corrupted system files including DLL files will be given to you.

Tip: The SFC scan program may be not working. If you encounter this issue, this article may be helpful for you: Quick Fix – SFC Scannow Not Working (Focus on 2 Cases).

To start the process, you need to type command prompt in the search window. Then start to operate the following steps.

Step 1: Click the Run as administrator option from the function list after right clicking the command prompt in the pop-up list.

detecting problems

Step 2: Type the sfc /scannow order in the pop-up window, then press the Enter key. This process will take a long time (about 15minutes) to finish the scan process. Hence, the rest is to wait patiently.

command prompt

You are able to check whether the Windows Modules Installer Worker high CPU usage error is resolved when the scan finishes. Generally speaking, the issue can be addressed. If not, you can try other methods.

Fix 6: Reset PC

If all the above methods fail work, resetting you PC perhaps is worthwhile to try. Reset your computer to the original condition, then restart it. If you click the Remove Everything option during the reset process, you may lose your important data. So, making a backup is absolutely a wise idea before resetting the computer.

Here, strongly recommend you a professiona backup software – MiniTool ShadowMaker. You can back up your system, partitions, files and folders quickly and effectively in case your data get lost when resetting the computer. You are allowed to use the trial edition 30 days for free. Don’t hesitate to download it.

MiniTool ShadowMaker TrialClick to Download100%Clean & Safe

Here are some steps to back up files.

Step 1: Click the SOURCE blanket to choose the backup files.

choose backup files

Step 2: Click the DESTINATION blanket to select a destination for the backup files.

select the back up destination

Step 3: After choosing the backup source and destination, you can execute the backup operation.

Here, you have two options: Back Up Now and Back Up Later.

Tip: If you would like to get some advanced settings like: automatic backup, full backup, differential backup, please click Options to change the settings before clicking Back Up Now.
click Back Up Now

Now, let’s beagin to reset your PC. Click the Start button to open the Settings page, then type reset this pc in the search window to get the following page. Click the Get Started option to beagin to reset.

get started

Choose the Keep my files option (to avoid data loss) to continue the resetting process. Additionally, you can click Remove everything if you have backed up your important data.

keep my files

I tried the methods that MiniTool offered and I successfully fixed the Windows modules installer worker high CPU usage error. Click to tweet


Are you still troubled by Windows Modules Installer Worker high CPU usage? Come to try the recommended methods in this post. All the methods are illustrated specifically – each step with a screenshot.

We truly hope the solutions can help you resolve the high CPU usage issue caused by Windows Modules Installer Worker and don’t be troubled by it.

If you have any good idea about the Windows Modules Installer Worker high CPU usage error, you can share with us. We would appreciate it if you leave any suggestion or comment by sending an email to [email protected].

Windows Modules Installer Worker FAQ

What is Windows modules installer worker?
Windows Modules Installer Worker is one of the processes in Windows systems, which is known for its high CPU usage issue. It is related to the Windows update process and plays a role in updating Windows.
What does Windows modules installer worker do?
Windows Modules Installer Worker can help you check for new updates from the Windows server and install them on your PC system. In a word, it is very necessary for updating Windows automatically.
Can I stop Windows modules installer worker?
You’d better not stop Windows modules installer worker. You can disable it for temporarily when your computer runs slowly for quite a long period of time or the high disk usage annoys your normal work.
How do I stop TrustedInstaller service?
  1. Open the Run window by pressing Win and R keys.
  2. Type msconfig in the Run window and hit Enter.
  3. Click on the System Configuration tab.
  4. Pick the Services tab.
  5. Find and uncheck Windows Modules Installer box.
  6. Click OK to save the change.
  7. Open the Services window again and set the Startup type of Windows Modules Installer to Manual.
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