Service Host SysMain is a background process that is run by your system. However, this program might consume your PC resources, due to which you might notice low performance. If you started getting low-performance issues and your PC starts to get slow suddenly, it may be because of the Service Host SysMain process.

Many users have reported performance issues because of Service Host SysMain high disk usage in Windows 10. If you are also facing the same problem, then you probably are at the right place.

Service Host Sysmain High Disk in Windows 11

This article will discuss how you can fix Service Host SysMain high disk usage in Windows 10 and Windows 11.

Service Host SysMain High Disk Usage In Windows 10

Stop SysMain Service

You can stop the service to fix Service Host SysMain high disk usage issue. To stop the SysMain service, follow the steps given below-

  • Press Windows + R key on your keyboard. This will open the run-dialog box. 
  • In the run dialog box, type services.msc and click on OK. This will open services windows. Here search for SysMain. 
  • Right-click on SysMain and then click on properties. 

Service Host SysMain High Disk Usage In Windows 10?

  • Click on the stop button to stop it and then click on OK to save the changes. 

Change Registry Value Data

You can try changing the registry value data to fix the issue you are facing. To fix Services Host SysMain High Disk Usage in Windows, follow the steps given below-

  • Press the Windows + R key to open the run dialog box.
  • In the run dialog box, search for regedit and then click on OK. 
  • Head to the following address in the registry editor-

Computer\HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\Ndu

  • Double click on the start key in the right-side panel.

Service Host SysMain High Disk Usage In Windows 10?

  • Set the value to 4, and then click on OK. 

Run System File Checker

Service Host SysMain high disk usage (Service Host: sysmain) can also be caused by the corrupted system files on your PC. If there are any corrupted files on your PC, it may cause this issue and may interrupt your PC’s well-functioning. This can cause high CPU usage, as well as degrade the performance of your PC. You can run the system file checker to scan for corrupted files and fix them. Follow the steps given below to run the system file checker-

  • In the start menu, search for the command prompt. Right-click on it, and then click on the run as administrator. 
  • Type in the command sfc /scannow in the command prompt, and hit Enter. 

Service Host SysMain High Disk Usage In Windows 10?

  • The command prompt will start running the system file checker. Wait for the process to complete.
  • Once the process is completed, close the command prompt and restart your PC.
  • After doing so, the issue will be solved.

Disable Background Intelligent Transfer Service Host: sysmain

You can try disabling background intelligent transfer to fix the Service Host SysMain high disk usage in Windows 10. To disable background intelligent transfer, follow the steps given below-

  • Press Windows + R key combo to open the run dialog box. 
  • In the run dialog box, type the command msconfig and click on OK. 
  • This will open the system configuration. Head to the services tab in the system configuration window.

Service Host SysMain High Disk Usage In Windows 10?

  • Here you will find background intelligent transfer service. Uncheck this checkbox, and click on apply, and then click on OK. 

Disable Service Host Local System Task

You can either try disabling the service host local system directly, which can also fix the problem for you. To disable service host local system task, follow the steps given below-

  • In the start menu, search for task manager. 
  • Head to the processes tab in the task manager. 
  • Search for Service Host: Local System. Select it, and then click on end task. 

Disable Service Host Local System

  • You will get a warning message. In the warning message, check the abandon unsaved data and shut down check box.
  • After doing so, click on shut down. 

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Final Words

That’s how you can fix Service Host SysMain high disk usage in Windows 10. By following the methods mentioned in this article, you can fix high disk usage because of Service Host SysMain in Windows 11.

Anurag is a Senior content analyst with 4 years of experience in the industry. Based in India, He is extremely skilled at Windows related to How to Troubleshooting matters. His favorite topics are Windows 11, Android, and How To's.

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