What is MoUSO Core Worker Process

The MoUSO Core Worker Process is a critical component of the Windows operating system, responsible for managing the installation of Windows updates. In some cases, this process can cause high CPU or disk usage, leading to a slowdown of your computer’s performance. This article aims to provide an in-depth understanding of the MoUSO Core Worker Process, help you determine if it is malware, and offer various methods to fix high CPU or disk usage problems associated with it. Furthermore, we will provide a conclusion to ensure that you have all the information needed to maintain a stable system. We will also discuss the importance of regular system maintenance and the role of this process in keeping your computer up-to-date with the latest security patches and feature updates.

mouso core worker process

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What is the MoUSO Core Worker Process?

The MoUSO Core Worker Process, also known as MoUSOCoreWorker.exe, is a Microsoft process that plays a vital role in managing the installation of Windows updates. This process appears in the Task Manager every time your Windows operating system checks for updates. It is responsible for monitoring the status of various updates as they progress from notification to installation. This monitoring usually occurs in the background and should not cause any issues during normal use.

However, when automatic updates are enabled, Windows will periodically search for updates in the background. This can cause your computer to wake up from sleep mode and, if not configured correctly, may lead to a slowdown in your system’s performance. It is crucial to be aware of this process, understand its workings, and take necessary precautions to ensure it does not negatively impact your computer’s performance. The MoUSO Core Worker Process is essential for keeping your system secure and up-to-date, as it helps detect and install crucial updates that protect your computer from vulnerabilities and enhance its performance.

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Is the MoUSO Core Worker Process Malware?

The MoUSO Core Worker Process is not malware. It is a legitimate Microsoft program that comes pre-installed with your Windows operating system. This means the process cannot harm your system in any direct way, and there is no need to worry about removing it.

However, due to the potential increased CPU or disk usage associated with this process, it could have some harmful effects if you let the process run rampant for an extended period. Some users have reported that in extreme cases, the process can lead to damage to their SSD drives. As a result, it is crucial to monitor the process and take appropriate action if necessary. Ensuring your system’s security is always up-to-date, and running regular scans can help keep your computer safe from any potential threats. Additionally, it is vital to educate yourself about the difference between legitimate system processes and malware to prevent accidentally removing essential components of your system.

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How to Fix MoUSO Core Worker Process High Disk/CPU Usage

If the MoUSO Core Worker Process is depleting your computer’s resources, there are several methods you can employ to address the issue. Although the process itself cannot be removed, you can troubleshoot and fix some of the issues that may cause it to excessively use your CPU, disk, or memory. Some of these methods include:

1. Install all pending updates:

To avoid issues caused by this process, ensure you have installed all pending and optional updates on your system.

  1. Click on the Windows icon, select Settings, or use the Windows + I shortcut.


2. Click on Update & Security, and click on the Windows Update tab.

update and security

3. Check for updates, click on “View all optional updates” if necessary, and install all available updates.

MoUSO Core Worker Process: install updates

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2. Run the Windows Update troubleshooter:

Windows 10 has built-in troubleshooting tools that can help diagnose and resolve issues. Run the Windows Update troubleshooter to detect and fix problems related to the MoUSO Core Worker Process.

  1. Access the Control Panel, search for Troubleshoot.

control panel

2. Click on the Troubleshooting header.


3. Click on “View all” link, locate the Windows Update troubleshooter, and run it.

View all

4. Click “Next” to begin the analysis and follow the prompts.

MoUSO Core Worker Process: next

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3. Disable Delivery Optimization:

Delivery Optimization might be causing high CPU, disk, or memory usage by the MoUSO Core Worker Process.

  1. To disable it, open the Registry Editor by pressing Windows + R and type “regedit.”


2. Navigate to the DoSvc key, or copy paste the following in the address bar: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\DoSvc

3. Right-click on the Start value, and choose Modify.


4. Change the Value data field to 4, ensure the Base is set to Hexadecimal, and click OK.

5. Restart your computer, press Windows + R, type “services.msc”.


6. Locate Delivery Optimization, right-click on it, select Properties.

Delivery Optimization

7. Set the Startup type to Disabled.

Startup type

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4. Restart the Windows Update service:

Restarting the Windows Update service can help resolve issues related to the MoUSO Core Worker Process, such as preventing your computer from waking up from sleep mode or consuming excessive resources.

  1. Press Windows + R, type “services.msc” to open Services.


2. Locate Windows Update.

MoUSO Core Worker Process: windows update

3. Right-click on it, and choose Restart.

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5. Adjust Windows Update settings:

Restoring your power settings to their default configuration can help resolve this issue waking your computer from sleep mode.

  1. Press Windows + S or click on the magnifying glass icon in your taskbar.

2. Type “PowerShell” in the search field, right-click on the application, and click “Run as administrator.”

method 5: MoUSO Core Worker Process

3. Type in the command “powercfg -restoredefaultschemes” and press Enter.

4. Restart your computer and check if the issue is resolved.

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6. Monitor and optimize your system:

Regularly monitoring your system’s performance and resource usage can help you identify any issues related to the MoUSO Core Worker Process. Using tools like the Task Manager, Resource Monitor, and Performance Monitor can give you insights into how your computer is performing and help you make adjustments as needed.

Hope this article helps you in solving the issue. Let us know in the comments when you successfully fix it.

Happy troubleshooting!!!

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