[FIX] What Is Service Host Superfetch? (Solve High CPU Usage)

Service Host Superfetch

Imagine a scenario. You are working very hard on your next presentation. You almost finalized the design and suddenly a dialog box pops up.

“Your PC runs into a problem that it couldn’t handle, and the disk usage is nearly 100 percent, which is caused by Service Host: Local System.”

It happens with most of the Windows Users in the world. To be sure that you don’t panic, we are here to tell you what causes this error and How to stop it.

Stick to your seat.

What is Service Host Superfetch

Service Host

Service host is a process name for services that runs using the dynamic system link libraries. Microsoft pivoted from using the internal Executable files (.exe) to Dynamic Link Libraries (.dll). This enhanced the code reusability and extensibility of a file. The code would be packed up in small files known as DLLs and then used and fetched whenever necessary. The downside is that the user can launch an executable file directly from the graphical user interface but can not do the same for a DLL file. DLL file has to be loaded in a shell and then executed. For this work, the Service Host was started.

Service Host Superfetch

Service Host Superfetch

Service Host Superfetch is a service that helps the system to fetch the data used in the successful execution of a program. It manages random memory in a system to enhance the proper functioning of the task. To prevent crashing of the task, Superfetch stores are created which later fetch the memory to be used from the RAM instead of the Hard Disk.

Hard to Understand? No problem, We’ll make you understand. Superfetch caching is just like data caching. In caching, the data for the commonly used program is stored in the drives beforehand so that the program can run faster the next time. Same goes for Superfetch caching. It stores the commonly needed data in the RAM so that the system doesn’t have to load it from the hard drive every time.

The Service Host Superfetch service is generally beneficial but it sometimes causes a defect too. In many systems, it causes an error where the Service Host Superfetch uses too much memory and blocks the execution of the other programs. To solve this, read the below-given section.

How to solve high CPU usage

Experiencing low memory issues? We have summed up three different fixes to solve your problem. Have a look and implement each of them.

Stop the Superfetch to Fix Service Host: Local System High Disk Usage

Method 1


  • Open Windows Run by pressing Windows + R. Type services.MSc and hit Enter.
  • Now search for Superfetch and press Enter.
  • Click on Property and Edit the property.
  • Now click on STOP to disable the Superfetch service.


Method 2

  • Click on Start and type cmd in the search box.
  • Then Right Click on the Command Prompt option and Select Run As Admin option.

Service Host Superfetch

  • Press Yes in the pop-up dialog box to Run as Admin.
  • Type the command “net.exe stop Superfetch”
  • Press Enter.
  • Wait some time and let the computer do your work.
  • To check if the problem is solved, type chkdsk.exe /f /r and press the Enter key on your keyboard.
  • Type Y to confirm your disk check.

Fix The Problem With Windows Troubleshooting

Alongside other services, Windows Update is also one of the services that is said to use high amounts of memory in the system.

Check once to see if the error is because of Windows Updates service.

  • Click on Start and Click on Control Panel on the right sidebar.
  • Select View By category option.
  • Find System and Security and select it.

Service Host Superfetch

  • Click on Security and Maintenance.
  • Select troubleshooting.

Service Host Superfetch

  • Click Fix problems with Windows Updates.

Service Host Superfetch

  • Select Next and then Troubleshoot as an Administrator.

Service Host Superfetch

The problem with the Windows Update must be fixed till now.

If the above methods do not work, try the last method.

Clear up Junk Files To Optimize your PC

Junk FIles must be taken into count while trying to fix your personal computer. The junk files can be cleared in two ways. Here, we have summed up both.

Method 1: Cleaning temporary Files

  • To clean temporary files, go to Start.
  • Then type “%temp” from your keyboard and press Enter.
  • Now you will see some files.
  • Select All by pressing Ctrl + A.
  • Press Shift + Delete to permanently delete those files.

Note: They are just temporary cache files and have no effect that can harm the performance of your personal computer.

Method 2: By Using a software

  • Download a software known as EaseUS free partition tool.
  • Launch the Program.
  • Select Tools and click on System Optimization.
  • Click on Junk File Cleanup.
  • Then select Analyze to search for junk files on your PC.
  • You can check all the junk files particularly and then remove the rest of them.
  • Click yes to clean the junk files.


After you perform all of the above-prescribed steps, do not forget to reboot your system once because it is important in Windows to reboot after altering a service or a program.


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