If so, you shouldn’t worry. At least not just yet. The Windows Modules Installer Worker is a legitimate Windows process with the corresponding file named “TiWorker.exe“. You need this process to keep your operating system up and running smoothly. In this post, we will discuss what this process is, if you ought to disable it to conserve system resources, and how to fix the issue of the process consuming high system resources.

What is Windows Modules Installer Worker Process?

The Windows Modules Installer Worker is responsible for detecting and installing Windows updates and other Microsoft product updates, like OneDrive, Office, etc. Before it installs the updates, it also backs up old data into a separate folder in case you want to revert to the previous version of the OS. If you recall, this is the “Windows.old” folder that you often find in the system boot drive. Like it sounds, this is a major task – moving critical files and folders around and replacing them with more downloaded content from the internet. This task is bound to consume at least some system resources. That said, high CPU/ disk consumption becomes a worry even after the updates are installed but the Windows Modules Installer Worker is still functioning at its maximum capacity, i.e. taking up high amounts of CPU and disk. In certain cases, it even takes up 100 percent of the CPU, leaving your system incapable of performing any other tasks at all. Let us now see how you can mitigate the issue and bring your resource consumption back to normal.

Fix: Windows Modules Installer Worker High CPU Usage

As we mentioned earlier, the Windows Modules Installer Worker will normally take up high amounts of CPU and disk on your PC. However, it does not mean that it should take up the entire component all for itself. If it does, then that is something you ought to worry about, and then perform the following potential solutions. Another reason to perform these tasks is when the Windows has been updated, but you still see the Windows Modules Installer Worker consuming high system resources in the Task Manager. The solutions given below are given in chronological order, therefore we suggest that you perform them in the same order as well.

Restart Windows Update Service

Often, the Windows Modules Installer Worker can become glitchy, but this can be fixed by restarting a dependency service named the “Windows Update” service. Follow these steps to restart this service: Once the service restarts, give the Windows Modules Installer Worker some time to install the update(s). If after some time it is still consuming significant amounts of CPU or disk, then we must try some other solutions.

Run Windows Update Troubleshooter

Thankfully, both Windows 10 and 11 come with built-in troubleshooters, including the Windows Update troubleshooter. This tool can scan and potentially fix any detected issues with Windows Update, which in turn will fix the issue of Windows Modules Installer Worker’s high resource consumption. Perform the following steps to run the Windows Update troubleshooter:

In Windows 11

In Windows 10

If any changes are made by the troubleshooter, you should now recheck if Windows Modules Installer Worker is still functioning whilst taking up significant amounts of system resources. If it is, then we must try a more aggressive approach to fix the problem.

Clear Software Distribution Folder

The Software Distribution folder can be found in C:\Windows. This folder contains temporary files within a sub-folder (download) that are required to install a Windows update. Quite often, a Windows update fails to install and experiences an error code because of these corrupted files. This can be a reason for the Windows Modules Installer Worker to become glitchy. In this case, these temporary files need to be removed, and the update process needs to be started from the top, where any prior downloaded files are re-downloaded. Follow these steps to clear the folder: Once it reboots, it is likely that the Windows Modules Installer Worker process is still running, since it is now reattempting to download the update files. Give it ample time and check to see if it is still consuming significant system resources even after 1 hour. If it is, then we are afraid that the issue persists.

Repair Operating System with DISM and SFC Tools

If the issue still hasn’t gone away, there are likely corrupted files on your system. In that case, you can attempt to repair them using the built-in DISM and SFC tools. Perform the following steps to attempt and repair any corrupted/missing system files: When the computer reboots, recheck if the Windows Modules Installer Worker is still consuming large amounts of the CPU and the disk. All the possible solutions should work and fix the issue of high CPU consumption by Windows Modules Installer Worker (TiWorker.exe).

Is Windows Modules Installer Worker a Virus?

By now, you should have understood that the Windows Modules Installer Worker is a legitimate Windows process responsible for downloading and installing Windows updates as well as other Microsoft product updates. Therefore, it can be concluded that the process itself is not a virus. However, hackers often conceal viruses with the names of legitimate Windows processes so that they can hide the process in plain sight.

Is it Safe to Disable Windows Modules Installer?

The answer is both yes and no. Technically, it is safe to disable the Windows Modules Installer service, which in turn will disable Windows Modules Installer Worker, freeing up your system resources. However, this will prevent your operating system from being updated in the future, stealing you of the critical system updates required to protect your PC. In the long run, the answer is no. It is not safe to disable the Windows Modules Installer service, and we do not suggest that you do so.

Closing Thoughts

The Windows Modules Installer Worker is the name of the process that you see in the Task Manager. However, the name of the file running the process is called “TiWorker.exe.” This file can occasionally, but rarely, become corrupted, causing the Windows Modules Installer Worker to behave abnormally and consume more system resources than usual. In a similar scenario, you can attempt to fix the issue using the given guide above and mitigate the issue without having to completely redo your OS. Also see:

How to Fix Modern Setup Host High Disk Usage in Windows 10How to Fix WMI Provider Host (WmiPrvSE.exe) High CPU Usage on Windows 10How to Use DISM, SFC, CHKDSK to Repair Windows 11How to Fix Windows Update Error 0x800b0101How To Fix CTRL C Not Working in Windows