High CPU Usage by Service Host: Local System (Network Restricted) [Fix]

Do you have a high CPU usage by the Service Host: Local System (Network Restricted)? On this post, I will show you a way to fix this error.

Undoubtedly the slowdown of computers is one of the seas most feared by the owners. The truth is that the slowdown or decrease in the performance of a Windows computer is practically impossible to avoid unless you replace hardware.

This is due to the wear and tear of the hardware that makes up your computer; although, there is another type of slowdown than can be avoided such as the increase in CPU usage caused by a program or Windows error.

Fix High CPU Usage by Service Host: Local Service

high cpu usage service host local system

In Windows operating systems, you can know the CPU usage that each process was running on your computer accessing the Task Manager.

To open the Task Manager, press the key combination Ctrl + Alt + Del and on the menu that opens click on the option Task Manager.

Therefore, expressly in the Processes section, you can find the process: Service Host: Local Service (Network Restricted). This process is the one that sometimes causes the problem of slowing down your computer.

It is not uncommon to observe how the process “Service Host: Local Service (restricted network)” makes use of the vast majority of CPU and Disk capacity:

high cpu disk usage

This process relates to the Superfetch service, which is only enabled on computers that incorporate traditional hard drives, so if you own a computer with an SSD, you don’t have to worry about this feature.

Superfetch is responsible for displaying the most frequently used apps and uploads its files in RAM to speed up the execution of those apps. In Windows 10, a frequent error is the one that causes Superfetch to use a large number of system resources causing excessive CPU usage.

To solve this problem, and return to a consistent performance to your Windows PC, you must disable the Superfetch service. However, it should be noted that this Superfetch service should only be deactivated if it is causing a problem since if this service works correctly, it will precisely improve the performance of your PC.

That said, on the following lines I want to show you step by step how to fix the high CPU usage caused by the process “Service Host: Local Service (Restricted Network)” in Windows:

The first thing you will have to do is access the Services tool which you can access using Windows Search, that is, type the word Services in the search box.

Alternatively, you can press the key combination Winkey + R, copy the following line: services.msc and press Enter.


When the Services window appears you will see a list with all the local services that your Windows computer has. In this list, you will have to search and find the service with the name: Superfetch. There you have to double-click on the service to open its Properties.

When the properties window opens must go to the section General in which you have the option to set Startup type as Disabled. Do not forget to click, OK.

superfetch service

Now before closing the window, you must click on the Stop button so that in case the process is running at this time, it stops automatically, and therefore the use of the CPU you use is released.

Once the service properties window is closed, you will have to restart your computer for the changes to take effect.

After the restart of your computer with Windows 10 you should check how now the performance of your computer returns to its normal state and therefore the process “Service Host: Local Service (Restricted Network)” will cease to use the CPU excessively.

If the performance of your Windows PC doesn’t improve after making these changes, you may need to update your Windows or upgrade some hardware. Remember that new Windows versions require better hardware with each new release.

Also read: What is WMI Provider Host & Fix High CPU Usage in Windows 10

I hope this tutorial could fix your high CPU usage error by the service host: local system. If you have any questions this tutorial, leave them in the comments section below.

Thanks for reading 🙂

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