Mouso Core Worker Process

The ‘Mouso Core Worker Process‘ is a Windows process that automatically activates in the background whenever Windows checks for updates. This process was carried forward by Microsoft in the 1903 version of Windows 10. If you’re using a version of Windows 10 before 1903, you might not find it in Task Manager.

This process works with the following executable and DLL files to manage and install new features and Windows Updates on the system :

  • USOCoreWorker.exe
  • USOClient.exe
  • USOapi.dll
  • USOcoreps.dll
  • USOsvc.dll

This process is necessary as it keeps the system safe from threats by updating the system. However, it wakes your system from sleep constantly and you will often find your system fan with the LED lights on or blinking as it cannot find the update status.

Is it safe to use ‘Mouso Core Worker Process’ ?

Yes, Mouso Core Worker Process is absolutely safe. The Mouso Core Worker Process is an Update Session Orchestrator (USO) used to manage Windows Update sessions. Managing the update session includes resolving any issues that may be blocking the Windows Update process. This process keeps Windows safe from any threats while updating Windows.

How to Disable or Fix ‘Mouso Core Worker Process’?

After verifying the authenticity of the “Mouso Core Worker Process“, if you are sure that it is a virus, we recommend removing it.

The most common cause of this problem is pending updates. If you are using Windows 10 version 1809 or later, we recommend that you install the KB4568831 update on Windows 10, as this will resolve the issue for others.

  • First of all, go to the ‘Start menu’ and click on the ‘Settings’ option.
  • Then, click on the ‘Update & Security’ option.
  • Now, click on the ‘Check for updates’ button to let Windows download the ‘KB4568831’ update if you are running Windows 10 version 1809 and later.

Note: Your system will restart while installing updates. So, don’t worry.

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

After completing the upgrade process, check to see if this solution works for you or not.

Disabling Delivery Optimization

In this solution, we will disable “Delivery Optimization” in Windows 10 through “Registry Editor” because normally Windows 10 will not allow you to disable it. Turning it off will not stop updates, but will reduce resource usage because this approach has helped others.

Note : Microsoft introduced “Delivery Optimization” in the Anniversary Update of Windows 10. This feature allows users to download updates from the local computer that they previously downloaded, instead of downloading them directly from Microsoft. This reduces bandwidth, but it is also a risk.

Make sure that all updates are installed –

  1. First, make sure that your system has successfully installed all updates or not. So go to “Updates and Security” according to the “first two steps of Solution 1“.
  2. If your system then displays the following message, it means that your system is up to date.
windows update
windows update

Disabling ‘Delivery Optimization’ via ‘Registry Editor

3. Now, open ‘Registry Editor’ as ‘Administrator.

4. After that, paste the following path in the address bar of ‘Registry Editor’ after ‘Computer’ to reach the ‘DoSvc’ folder.

Disabling ‘Delivery Optimization’ via ‘Registry Editor'

5. Now double click on the item named ‘Start‘ and change ‘Value data:’ to ‘4.’
6. Then click ‘OK‘ and exit ‘Registry Editor‘.

Disabling ‘Delivery Optimization’ via ‘Registry Editor'

7. Now, restart your system.

8. If the system has been restarted successfully, open “Services” from the “Start” menu.

9. Now, scroll down to find ‘Delivery Optimization’ and right-click on it, then choose the ‘Properties’ option.

10. You can see in the following picture that Windows has successfully disabled the ‘Delivery Optimization’ service.

Now check whether the “Mouso Core Worker process” resource consumption has returned to normal or not. If so, good for you. However, if this solution does not meet your usage requirements or does not resolve your issue, try the following.

Note : If the system installs updates, you will need to repeat the same procedure.

Restarting ‘Windows Update’ Services

If your system is running Windows 10 and does not go to sleep and you have already checked the cause of this problem with the ‘powercfg / requests‘ command, then restarting the ‘Windows Update‘ service will resolve this issue.

  • First open ‘Services‘ from the ‘Start menu‘ according to ‘step 9 of solution 2.’
  • Then scroll down to find “Windows Update“.
  • Now right-click on “Windows Update” and select “Restart“. This process restarts Windows Update when stopped.
Restarting ‘Windows Update’ Services
  • Then restart the system according to “step 3 of solution # 4“.

Note : Check for updates or not, because when Windows Update is restarted, all updated updates will be displayed in Windows. So install everything pending

Check if this solution has proven to be beneficial for you or not. If so, good for you. If not, try the following solutions.

Wrapping Up –

MoUso Core Worker Process Windows 10 is a Windows process and Windows needs to protect your system from ever-increasing system threats. Therefore, if it is a virus, we recommend that you remove it.

However, if it is not a virus and you have removed it due to high resource consumption, we recommend that you upgrade your system as recommended by Microsoft.