What is ‘Service Host SuperFetch’ and How To Fix It’s Problems

Service Host Superfetch has been one of the best aids available in the market. It helps in optimizing the performance of Windows operating systems in the respective PC as it makes some improvements in the hard drives of the systems.

However, if the user is ignorant towards the basics and proper knowledge of Windows service host, i.e., SuperFetch, then he may suffer from various system bugs and performance errors. It may lead to lagful user experience with the user of Solid State Drives (SSD) in their systems.

Service Host SuperFetch

Is your Windows computer running slowly, and you’ve noticed that Superfetch is using a considerable amount of disk space? You’re not alone. Many users often find themselves puzzled by high disk usage caused by Superfetch and wonder if disabling it is a wise decision.

This SEO-optimized article aims to shed light on why Superfetch might be using a lot of disk resources and whether disabling Superfetch and Prefetch is advisable.

What is Superfetch?

Superfetch is a feature in some older versions of Windows that aims to improve system performance over time. It pre-loads frequently used applications into RAM so that they can be instantly available to the user. Superfetch learns your usage patterns over time, so it becomes more efficient the longer you use your system.

What is Service Host Superfetch?

In the initial days of Service Host Superfetch, it was launched in assistance with the Windows operating system running on it’s Vista version. It is a successor of PreFetch. This software helps the system to improve its performance.

For that, it renders various commands and makes an analysis of it’s RAM and other cache files to generate an overlay displaying most frequently used applications on the system. One of the major attractions of this service is that it reduces the booting time of several applications.

Developers had specially designed these applications to operate it with hard disk drives. However, a user who is already taking the use of SSD drives in their systems might not be able to feel that much of improvements even after taking the use of Service Host Superfetch.

What Is The Problem With Service Host Superfetch?

Since developers had designed this service in a way that it keeps on running in the background of the system. Even after we close the application from foreground operations, thus, it starts occupying a constant space in the storage memory and the RAM of the system. Thereby, it leads the user to sometimes feels slowdown errors.

One may also start experiencing that their Windows booting time has also increased. If the user is trying to play high-end games in their systems with ultimate rich graphics, then the Service Host Superfetch overlay might starts giving hikes to the CPU and the RAM to fix bugs of the games arising out of the internet connectivity.

This automatic bug fixing nature of the Service Host Superfetch may make the user gaming experience unrich as well. The gaming frame rates will also start dropping. Also, the miscellaneous junk files, including continuously rising cache memory in the junk folder, will experience a sudden boost.

Thereby, it creates difficulty for users to operate their systems smoothly. If the users have RAM in their systems, which are less than 4GB, then they are more prone to experience the side effects of Service Host Superfetch.

SuperFetch is one of the most suitable software whenever we operate it along with appreciable RAM. If the user is not having sufficient storage in their RAM of the system, then, Service Host Superfetch will continue to crash with different other applications, and it’s own parent folder as well.

It might create an annoying situation where the user can also witness playback errors and fall in the frame drops of their display.

How to Find Service Host SuperFetch

It is considered to be a difficult job of finding the root cause of Service Host Superfetch, which is hampering the user performance. One may also get confused after opening the task manager that which of those present application is affecting the parent folder of Service Host Superfetch.

We consider it as generic, which automatically gets collected under the head “Service Hosts.” Managing Excel files under this service host is considered to be very problematic as the parent folders of both the files crash often.

To find the service errors with no much difficulty, one may try to navigate through the vast list of various service hosts to find SuperFetch there, and it will redirect the user automatically to the root cause of service host which will be responsible for hampering and slowing down the performance of the user.

How to Disable SuperFetch

If one may try to disable Service Host Superfetch without any reason, then he may not witness any improvements in the system performance. Disabling SuperFetch in that situation will be vague.

But if one is witnessing continuous slowdown errors and extraordinary high booting time of Windows and various applications then, disable SuperFetch. It can help them to improve system performance.

Solution 1: Disable SuperFetch in Windows Services

The user willing to disable SuperFetch in Windows services may try to follow under mentioned guidelines:

Step 1: Firstly, press the Windows key + R to launch the app entry list settings.

Step 2: Then, type service.misc on the open box to click on the OK button.

Step 3: After that, navigate through the opened database to find SuperFetch on that list.

Step 4: By clicking the right button on the stop option will lead the Service Host Superfetch to get disabled.

Solution 2: How to Disable SuperFetch in the Registry

Disable Superfetch from the registry as well after disabling this service from the Windows services. It will make further sort of improvements in their user experience. Disabling SuperFetch in the registry can reduce the booting time and also benefit the user as well!

One may need to follow the under mentioned instructions to disable the Service Host Superfetch from their system:-

Step 1: Firstly, press the Windows button and R button alternatively. It will launch the settings option of the concerned service host.

It will lead the system overlay to display a database consisting of multiple generic service hosts.

Step 2: Then,  type “regedit” on the popped-up box in order to hit the OK button.

Step 3: Further, you will be redirected to registry page on which he needs to navigate HKEY_LOCAL_MACHINE

Step 4: Here, the user will be asked to tap on the system arising “PrefetchParameters.”

Step 5: Change the already settled 0 value to manual the Service Host Superfetch. It will automatically disable itself from the registry as well!

Why is Superfetch Using So Much Disk?

  1. Pre-Loading Data: Superfetch uses your disk to read and pre-load applications, causing a spike in disk usage.
  2. Learning Curve: Initially, Superfetch might consume more disk space as it’s learning your usage habits.
  3. Compatibility Issues: Some applications or system configurations may not be fully compatible with Superfetch, causing higher disk utilization.

Should I Disable Superfetch and Prefetch?

The answer to this question is highly dependent on your specific system configuration and usage patterns. Here are some considerations:

Reasons to Disable

  1. High Disk Usage: If you consistently notice high disk usage due to Superfetch, disabling it might improve system performance.
  2. SSD Concerns: Superfetch is often deemed unnecessary for systems with solid-state drives (SSDs) as they are already fast.

Reasons to Keep Enabled

  1. Performance Improvements: Superfetch is designed to speed up application launching and may improve system responsiveness over time.
  2. No Harm Done: Generally, Superfetch operates in the background and should not cause issues for most users.

How to Disable Superfetch and Prefetch

If you’ve decided that disabling Superfetch is the right move for you, here’s how to do it:

  1. Press Win + R and type services.msc and press Enter.
  2. Locate “Superfetch” in the list.
  3. Right-click on it and select “Stop.”
  4. To permanently disable it, right-click again, select “Properties,” then under “Startup type,” choose “Disabled.”

Note: Superfetch has been renamed as “SysMain” in more recent versions of Windows. If you don’t find Superfetch, look for SysMain.


In today’s world, we use most of the DLL files anonymously with the Microsoft software. So, we must know the service hosts as imperative. Nobody will like to have an unrich user experience while operating their systems.

One of the most widely used service hosts is SuperFetch. Not only it helps the users to improve the performance of the systems, but it also reduces the booting time of the Windows. Several other applications are running in the background as well as in the foreground if the system’s overlay starts working efficiently.

Superfetch aims to improve system performance but can sometimes lead to high disk usage concerns. While disabling it may seem like a solution, it’s crucial to weigh the pros and cons tailored to your specific needs and system configuration.

The effects of disabling Superfetch can vary, and it may be beneficial for some systems while unnecessary or even detrimental for others.

If you have further questions or would like to share your experience with Superfetch and disk usage, feel free to leave a comment below!