What is Service Host Superfetch, How to fix it? [Solved]

Service Host Superfetch: If your windows is not up to date or if your computer has a low config then you might be seeing the Service Host using so much CPU. This issue has become very common nowadays and most of them don’t know how to fix it. When you open the task manager you can see that Service Host Superfetch or some other services using 100% of your CPU, Disk or Memory Usage. When this happens you won’t be able to use any application on your computer since Service Host: Local System is used all the memory. Before we learn how to fix it, let us learn What is Service Host Superfetch and what Is its function?.

What is a Service Host?

Service Host (Svchost.exe) is a host process that runs from dynamic-link libraries. Microsoft started to change the Functionality of windows to DLL files which earlier used to rely on the internal Windows services which used to run on .exe files. We can’t launch DLL file directly like .exe files that’s why we use a shell which is loaded from executable file to load DLL services. This is called the Service Host Process, and that’s how Svchost.exe was born.

Windows needs a lot of services to run. If all the services are running under the single Service Host process, failure in one service can lead to shutting down of all the services on windows. In order to prevent this, All the services are organized into the logical groups for which a single Service Host Instance is created for each host group.

What is Service Host Superfetch?

Superfetch is part of Windows since Vista. It allows the Windows Operating System to Manage RAM (Random Access Memory) so that the applications can function very well. It also helps third-party applications to execute the common tasks very quickly since it stores and reads data from RAM instead of restoring the data from Hard disk.

Service Host Superfetch does drive caching, which means it copies the frequently and commonly used files to RAM. This allows the programs to boot faster since the data is already stored in RAM. But the problem is for the devices with low configuration which may result in the High Disk Usage. Service Host Superfetch only wants to optimize your system performance, that’s why it so much Disk Space.

It’s not the first time Superfetch Service Host is causing a problem, it has been there for a few years.  It is an amazing program, but whats the reason for Service Host Superfetch High Disk Usage?.

If you’re running a fully optimized computer which has Superfetch running in the background. It looks like everything is working fine, but until your system starts running slow. Superfetch uses RAM and CPU memory on your computer and if you don’t have a good amount of RAM and Disk space, it triggers and slows your system and shuts all the other programs.

What does Superfetch Do?

Here are a few things that Superfetch does in the background.

  • It makes your Applications run smoothly and helps them function quickly.
  • It cuts the boot time.
  • Easily loads the common applications, since it saves the Drive Cache in the RAM, instead of taking the data from the drive.

Fix Superfetch High Disk Usage (Windows Vista/xp/7/8/10)

We have already learned the reason for Superfetch High CPU usage. And there are few ways to fix  Superfetch High Disk Usage.

Disable Service Host Superfetch from Services

Follow these steps below to Disable Superfetch from Services tab.

  • Open the Run Search box by pressing Windows key + R simultaneously.
  • Type “services.MSC” in the search box and press Enter key to the open system services tab.
  • Once the system services tab is opened, search for Superfetch service.
  • Right click on the Superfetch Service and click on properties.
  • In the startup type drag down menu, choose Disabled option and then click on Apply and ok.

This is how you can Disable Service Host Superfetch from Services tab. You can disable any service by using this method.


Close Superfetch from Windows Registry.

If you’re not able to close the Superfetch Service host from the services tab, then you can try this method.

  • Open the Run Search box by pressing Windows key + R simultaneously.
  • Type “regedit” in the search box and press Enter key to open Registry Editor Window.
  • In the Registry Editor Window, Search for HKEY_LOCAL_MACHINE folder and Click it.
  • Navigate from SYSTEM > CurrenControlSet > Control > Session Manager > Memory Management > Prefetch Parameters.
  • Right Click on the PrefetchParameters folder.
  • Select Open new> DWORD Value.
  • Enter ‘0’ for the value and it will disable the service.
  • Select Apply and OK.

Fix Service Host Superfetch by Disk Cleanup/ Update and Restart computer

If the above methods didn’t work for you can try freeing up the memory on your Computer and restarting it. You can use CC Cleaner or any other app to clear the cache files. Once the junk is cleared, restart the computer, so that I can run normally again.

Sometimes you may face High Disk or CPU issues if your Windows is not updated. Make sure that you have not disabled the Windows Updates on your PC. Always update the software and keep it up to date.

Run anti-virus scan and prevent unwanted files running in the computer. One or the other method will be able to Fix Service Host Superfetch issue.

Hope this article was helpful, If you have any other fixes please feel free to comment down below.