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Service Host Superfetch: What It Is And How To Disable It?

Updated on May 18, 2020

Service Host Superfetch: What It Is And How To Disable It?

Many system processes have been introduced by Microsoft in their updated version which proves supportive for modern hardware, but some underlying features gradually turn out to be problematic for the users as well. SuperFetch is one such process which often results in sluggish performance of your Windows PC due to its high disk usage. At some point or the other, most of the Window users have encountered this high disk usage problem as Service host Superfetch takes up memory in the Task Manager. If this happens with you as well, then check out the information provided here to know everything about SuperFetch.

What is a Service Host SuperFetch?

Originally, Windows SuperFetch was introduced as a successor to PreFetch. This is actually a part of Windows Vista and it analyzes the usage of RAM in your system for generating a profile of applications and profiles that you run very often. After properly analyzing, SuperFetch gets an idea of your regularly used apps and programs and thus, it stores and reads data of those applications onto your RAM for quick loading.

The main aim of this SuperFetch is to speed up the loading time of applications, especially for those who are running hard drives. Though by default this service is active, yet those who are running a SSD will not be much benefitted from this feature. However, if you are running a mixed drive system, then also it optimizes the performance of your system and applications. Also, it allows programs to boot faster by learning your usage pattern, quick loading of common apps and decreasing boot time.

How does Service Host SuperFetch Report High Disk Usage Problems?

Like some other Windows features, SuperFetch also always runs in the background and makes use of some system resources like RAM, CPU etc. It is like drive caching as it copies all your regularly used files to RAM. Also, it allows programs for booting faster. But if your system does not have latest hardware or particularly any weak hardware, then SuperFetch might cause high disk usage, ultimately leading to slow down of your device.

The problem of High Disk Usage by SuperFetch is really a dangerous one as it makes your system use its maximum ability to respond to I/O requests. Moreover, it copies new files that you were recently accessing and clears RAM. Once it succeeds in overhauling your RAM, the disk usage will be automatically reduced.

How to Disable Service Host SuperFetch Service? Check out some Easy Methods

If your system is causing no slowdowns and running fine, then you will hardly get any benefit from disabling SuperFetch. But often SuperFetch is found responsible for causing disk performance issues in different Windows versions, including Windows 10. So, if you are facing a hard disk usage issue, then disabling SuperFetch is worthwhile, at least on a temporary basis. This will surely eliminate the issue from your system.

Here three different methods have been discussed for disabling SuperFetch:

Method 1: Disable SuperFetch Using Command Prompt

Check out the steps given below to disable SuperFetch by using Command Prompt.

  • Turn on your device at first and click on the Start button.

  • From there, go to the Search option and type “cmd” in Windows Search

  • Then right-click on the option that you get and choose “Run as administrator” from the list.

  • Now, type “net.exe stop superfetch” in the Command Prompt window and tap on the Enter button.

  • If you find that the above stated command is not valid, then type “sc config sysmain start=disabled” and again click on the Enter button.

After performing these steps, you need to wait for some time to check if the computer is performing better than earlier or not. Alternatively, you can also go to the Task Manager to check and verify the disk usage of your computer. Just visit the Processes tab and take a look at the % at the top of the Disk column. If you find that it's no more 100%, then probably you have fixed the issue.

Method 2: Disable SuperFetch Using Services Snap-In

Go through the steps cited hereunder for disabling SuperFetch using Windows Services.

  • First of all, press the Windows key + R key to open the Run box. Alternatively, you can also go to the Search box, type ‘Run’ on it and from the list of results, click on the corresponding app.

  • After that, type “services.msc” in the search box and hit the Enter button to open it.

  • Now, you need to find ‘SuperFetch’ from the list of services by scrolling down.

  • Once you get it, right-click on that and choose the Stop button from the resulting menu.

  • Now, you need to prevent it from starting it once again. So, while Windows boots up for the next time, you need to right-click on it and choose the “Properties” option.

  • Then from the Startup Type drop-down menu, choose the “Disabled” option.

  • After that, click on the Stop button and restart your Windows.

Now, you need to go back to the Task Manager and from there, you can check your disk usage. Hopefully, now it will report normal usage.

Method 3: Disable SuperFetch Using Registry Editor

Apart from those methods mentioned above, you also have the option to change some of the functions of SuperFetch through the Windows Registry. Here is how you can disable SuperFetch from the registry:

  • At first, press the Windows key + R key to open the Run box. Alternatively, you can also go to the Search box, type ‘Run’ on it and from the list of results, click on the corresponding app.

  • Then go to the Windows Search, type “Registry Editor” and hit the Enter button to open it.

  • Once it opens, then go to the search bar. There you need to navigate through the following address- “HKEY_LOCAL_MACHINE / SYSTEM / CurrentControlSet / Control / Session Manager / MemoryManagement / PrefetchParameters.”

  • After that, go to the right side panel and double click on the “Enable SuperFetch” key.

  • Further, you need to change its value from 1 to 0 and hit the OK button.

At last, close down the Registry Editor and restart the system.

Wrapping Up

Hopefully, this write-up has provided you enough information on Service Host SuperFetch and the process to disable it. So now, you can easily bring back your disk usage to normal and optimize your system’s performance through any services, either Registry Editor, Command Prompt or Windows Services.


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