MoUSO Core Worker Process: What is it and How to Fix It?

MoUSO Core Worker Process: What is it and How to Fix It?

Are you having problems with a process, such as usocoreworker.exe, usoclient.exe, or USO Core Worker Process, that appears in your Task Manager as MoUSO Core Worker Process? What it is and how to resolve the issue with it are explained in this article. 

What is the ‘MoUSO Core Worker Process’ File?

The Microsoft process known as MoUSO Core Worker Process, also known as MoUSOCoreWorker.exe, aids the operating system in controlling the installation of Windows updates. Update Session Orchestrator is what it does, and the term “USO” in its name stands for that.

The MoUSO Core Worker Process can be to blame if your machine keeps waking up from sleep. The process can also consume too much CPU or disk space.

Problems caused due to MoUSO Core Worker Process

If you have not upgraded your system’s Windows to the current build, MoUsoCoreWorker.exe may cause your system to fail to sleep. Furthermore, corrupt/misconfigured power settings or conflicting third-party software (such as GoodSync) may be at blame for the issue in question.

Several people have raised the following concerns about this process:

  • High CPU utilization.
  • Disk use is high.
  • Memory use is high.
  • Excessive RAM consumption

We will first describe the method, and then we will verify its legitimacy. Following that, we’ll go over the 10 best methods to fix MoUSO Core Worker Process.

How to Disable or Fix it?

After checking the authenticity of the ‘MoUSO Core Worker Process,’ if you are certain it is a virus, we recommend removing it.

Solution 1: Installing the KB4568831 Update of Windows

The most common reason for the MoUSO Core Worker Process error is pending updates. If you are running Windows 10 version 1809 or later, we recommend installing the KB4568831 update of Windows 10 because it has resolved this issue for others.

  • To begin, go to the ‘Start menu and select the ‘Settings option.
  • Then, select the ‘Update & Security tab.
  • If you are running Windows 10 version 1809 or later, click the ‘Check for update button to allow Windows to download the ‘KB4568831’ update.

Please keep in mind that your system will restart while the updates are installed. So, don’t be concerned.

If your system does not automatically download the ‘KB4568831’ update, we recommend utilizing the ‘Microsoft Update Catalog’ to manually download and install the update.

Once the update procedure is complete, determine whether or not this method worked for you.

Solution 2: Uninstall/Disable the Conflicting Applications

If any of your programs (particularly synchronizing applications) keep the MoUSO Core Worker Process busy, your machine may fail to sleep (which prevents the system from sleeping).

In this case, either deactivating or removing these programs may resolve the issue. GoodSync is a recognized source of the problem.

Step 1: Click the Windows button, then select Gear/Settings.

Step 2: Now, go to Apps and then GoodSync.

Step 3: Then click Uninstall and confirm that you want to uninstall GoodSync.

Step 4: Now, to remove GoodSync, simply follow the on-screen instructions. If you do not wish to delete GoodSync, deactivate its syncing activity (do not configure it to “On Schedule” or “Run without User Interface (Unattended)”) and exit it altogether. Uninstall/disable any other incompatible software as well.

Then restart your system and upon restart, check if your system’s MoUSO core processor issue is resolved.

Solution 3: Disabling Delivery Optimization

In this approach, we will stop ‘Delivery Optimization’ in Windows 10 through ‘Registry Editor’ because Windows 10 generally does not enable you to disable it.

Disabling it will not halt the updates, but it will minimize resource use because this technique has aided others.

Note: Microsoft implemented ‘Delivery Optimization’ with the Windows-10 Anniversary Update.

This feature enables users to receive updates from a previously downloaded local computer rather than straight from Microsoft. It decreases bandwidth, but it also poses a danger.

Solution 4: Update Windows of Your System to the Latest Build

Microsoft adds new features to Windows regularly (to keep up with the latest technical breakthroughs) and fixes issues via the Windows update channel caused by the MoUSO core processor.

You may get the issue if you are using an old version of Windows since this might cause incompatibility between apps and OS components.

 In this situation, upgrading your system’s Windows to the most recent build may resolve the issue.

Step 1: To launch Windows Search, press the Windows + Q keys together and type Check for Updates.

Step 2: Now, in the search results, pick Check for Updates, and then, in the updates box, click the Check for Updates button.

Step 3: If updates are available (including optional updates), download and install them all. Check that no updates are in the process of being installed.

Step 4: After upgrading your machine’s operating system, restart it and see whether your system can go to sleep normally.

Solution 5: Run the Built-in Windows Update and Power Troubleshooters

You may encounter the MoUSO core processor error under discussion if the update processes of your system are stuck in the operation. Moreover, your system may fail to sleep if its power settings are not configured properly. In this context, running the built-in Power and Update troubleshooters may clear the glitch and thus solve the problem.

Step 1: Press the Windows key and then select Gear/Settings.

Step 2: Now, select Update & Security, and then, in the left part of the window, select Troubleshoot.

Step 3: Then, in the right part of the window, click on Additional Troubleshooters.

Step 4: Now, in the section of Get Up and Running, expand Windows Update and then click on the button of Run the Troubleshooter.

Step 5: Then, to complete the Windows Update troubleshooting, follow the steps.

Step 6: Now restart your system and check to see whether your system’s sleep capability is operating properly.

If not, expand Power (in Find and Fix Other Problems) and click the Run the Troubleshooter button in the Additional Troubleshooter window (steps 1–3).

Step 7: Then, follow the directions on your screen to complete the Power Troubleshooter procedure, and when the update process is complete, check for system updates.

Step 8: Now, restart your system and check to see whether your system’s sleep functioning has returned to normal.

Solution 6: Restore Power Settings of Your System to the Defaults

If your system’s power settings are incorrect, the sleep functionality may not function correctly. In this scenario, restoring your machine to its default settings may resolve the issue.

Step 1: Enter Command Prompt in the Window Search box. Right-click on Command Prompt in the results and then select Run as Administrator.

Step 2: After that, run the following cmdlet:

-restoredefaultschemes powercf

Step 3: Now restart your system and upon restart, check if your system is clear of the sleep issue.

Solution 7: Override the MoUSO Core Worker Process Request

If the problem of the MoUSO core processor  persists, changing your system’s power configuration to override the MoUSO Core Worker Process request may help.

  • To launch the Windows Search, press the Windows + Q keys together and type Command Prompt. Now, right-click on the Command Prompt (in the list of results) and choose Run as Administrator.

Now, run the following command:

powercfg /requestsoverride execute MoUsoCoreWorker.exe

  • Then verify if the process is overridden by executing the command below:

powercfg /requestsoverride

  • Now, restart your system and upon restart, check if your system is clear of the sleep issue. Whenever you want to remove the override, simply execute the following command in the elevated Command Prompt:

powercfg /requestsoverride process MoUsoCoreWorker.exe

Solution 8: Carry out a System Restore.

If none of the suggestions worked, consider restoring your system to a previous date when the system had been cleansed of the sleep issue.

#sleep mode in Windows

Solution 9: Disable Wake Timers of Your System

If your system’s wake timers are interfering with sleep, it may not go to sleep. Disabling your system’s wake timers may solve the problem in this scenario.

Step 1: Open the Windows Search by pressing the Windows + Q keys and typing Control Panel. Now, in the list of search results, select Control Panel.

Step 2: Select Power Options from the Hardware & Sound menu.

Step 3: Then, under Change Plan Settings, select Change Advanced Power Settings.

Step 4: Click the + symbol to access the Sleep options, then expand Allow Wake Timers.

Step 5: After that, deactivate the wake-up timers for “On Battery” and “Plugged in” and restart your machine.

Step 6: After restarting, check to see if your sleep problem has been resolved.

Solution 10: Disable Update Orchestrator (UOS) Service

The Update Orchestrator Service (UOS) is the service of the MoUSO Core Worker Process and it may cause the error at hand if the said service is in the error start. In this case, disabling the UOS service may solve the problem. But keep in mind that you may have to enable the UOS service when performing the update.

Step 1: Press Windows + Q keys (to open Windows Search) and type Services.

Step 2: Now, right-click on the Services (in the search results) and select Run as Administrator

Step 3: Then right-click on the Update Orchestrator Service (UOS) and select Properties.

Step 4: Now open the Startup type and select Disabled. Then click on the Apply/OK buttons.

Step 5: Then restart your system and upon restart, check if the sleep issue of your system is resolved.

Is MoUSO Safe to use?

MoUSO (Update Session Orchestrator) Core Worker Process, like ‘Waasmedic Agent.exe,’ utilizes a large number of system resources.

Furthermore, malware authors purposefully call their processes the same as Windows to introduce malware or trojans onto Windows PCs.

That is why many individuals are concerned about the file’s validity. We recommend double-checking the legitimacy of this process.


‘MoUSO Core Worker Process Windows 10’ is a Windows process that Windows requires to keep the system safe from ever-increasing system threats. As a result, we only recommend uninstalling it if it is a virus.

However, if it is not a virus and you are deleting it due to high resource usage, we propose that you upgrade your system following Microsoft’s instructions.

Frequently Asked Questions on MoUSO core worker process:

 Can I turn off MoUSO core worker process?

You can deactivate the USOCoreWorker.exe process if it causes excessive CPU utilization or overheating. You may accomplish this by utilizing the Services application.

What is the MoUSO core worker process?

MoUSO Core Worker Process is a Windows Update Session Orchestrator (USO) that manages update sessions. Managing the Update session entails resolving any difficulties that may prevent the Windows update process from continuing. When running a Windows update, this procedure also protects the operating system from potential dangers.

How do I turn off MoUSO?

Right-click on the Services entry in the results and select Run as administrator. Select Properties from the context menu when you right-click on the Update Orchestrator Service. Select Disabled from the Startup type. Click the OK button.

What is MoUSO service?

MoUSO Core Worker Process, also known as MoUSOCoreWorker.exe, is a Microsoft job that aids in the coordination of Windows update installation inside the operating system. This monitoring normally occurs in the background of Windows and should not interfere with normal operation in any manner.

What is sih client?

Sihclient.exe detects and repairs system components that are required for the automated upgrading of Windows and Microsoft applications on your computer. This program may connect to the internet and determine if it is required to begin healing actions on your PC, after which it will download the necessary payloads to carry out those operations.
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