1. Service Host Taking Up Disk
2. Service Host Local System High Disk

Many of the Windows 10 users are reporting to have an issue with ‘Very high disk usage of svchost.exe‘. This problem can be a real headache for the users as this not only eats up the disk processing speed but also as an user you can not stop it directly from Task Manager as it is a system application. Svchost.exe is a system application which is an integral part of Windows OS, which is used when multiple shared service processes are running in your computer.

Service Host:SysMain high disk usage, should I disable? My PC started going super slow, and saw SysMain seemed like the cause. I looked around on this subreddit and have seen people saying to disable it, while others are saying not too. I had this same problem, this is how i solved it. Kill and disable the 'Superfetch' service in 'services.msc' The go to 'Start-Settings-System-Notifications and actions' and turn off 'Show me tips about Windows' Hope this helps someone. This decreased memory usage for this particular service to 16.1MB and my CPU now idles at 10-15% instead. Service Host applications EATING up Memory When I start my computer I have a good 60+ service host applications running and after about an 1 or 2 of just having my computer on or playing on it in general all 60+ of those service host application are taking up all of my memory. To confirm the new settings, click Apply. From now on, the SysMain service will be disabled and will not restart. After disabling SysMain in Windows 10, you should no longer have problems with it related to 100% disk or CPU usage.

For many reasons svchost.exe may consume a huge amount of disk. But the most prominent reason is that svchost.exe is affected by a malware or virus, which automatically force svchost.exe to consume huge amount of ram and disk.

Initial Workaround–

Before going ahead to stop certain svchost.exe services attempt these following tasks and check your problem is solved or not.

1. Run a full antivirus scan through your computer files. Reboot and check if svchost.exe is still consuming huge amount of disk.

2. Check if any Windows 10 update is pending or not. If any of the updates are pending then update your computer and check if the issue with svchost.exe is fixed or not.

If your problem is still there then go for these solutions-

Fix 1 – Clear Event Viewer Logs from your computer

Your Event Viewer log may contain some corrupted file that can oppose the general service of the svchost.exe and cause its consumption of high disk usage. In order to clear Event Viewer Logs to follow these steps-

1. Press Windows key+R to open Run, and type “eventvwr” and hit Enter.

Event Viewer utility will open.

2. In the Event Viewer, on the left pane, you will find “Windows Logs“. Click on it to expand.

3. On the top of the expanded list right click on “Application” and click on “Clear Log“.

Service Host Taking Up Disk

4. Repeat step 2 for all 4 of the remaining Log headers- “Security“, “Setup“, “System” and “Forwarded Events“. (Right-click on each of them and click on “Clear Log“).

After clearing all the log files, close Event Viewer.

Reboot your computer.
Check if the problem with svchost.exe is still there or not. If the problem is still there go for the next fix.

Fix 2 – End Svchost process through Resource Monitor-

Ending all the svchost.exe processes from Resource Monitor may stop huge disk processing power consumption of svchost.exe on your computer.

1. To launch the Run window, press Windows key+R to launch Run window.

2. Now, type “resmon.exe” and hit Enter.

Resource Monitor window will be opened

2. In the Resource Monitor window, click on the “CPU” tab.

Service Host Local System High Disk

3. Now, click on the Search box of “Associated Handles” and type “svchost.exe“.

Search results will appear in the Associated Handles section.

4. In the search results, right-click on “svchost.exe” and then click on “End Process” to end the process on your computer.

Repeat Step-4 for all the search results to end all the tasks sequentially.

Once done, close the Resource Monitor window.

Svchost.exe should not consume a high amount of disk processing power further.

Fix 3 – Fix your Windows Update issues

If there is any kind of error is present in your Windows Update delivery service that can cause this error. You can fix this error by following these steps-

1. Simply press Windows key+R keys together to launch the Run window.

2. When the Run window pops up, type “services.msc” and then click on “OK” in the Run window.

2. In the services window, scroll down to look for the “Windows Update” service. Right-click on it and click on “Stop” to stop the service.

3. Go to this location-
This PC>Local Disk(C:)>Windows

In the list of folders, select “SoftwareDistribution” and press Shift+Delete to delete it.

Reboot your computer and check if the error is still there or not.

If the svchost.exe is still consuming a high amount of disk then go for the next fix.

Fix-4 Disable Background Intelligence Transfer Service (BITS)

Background Intelligence Transfer Service (BITS) is a service that downloads critical files and updates for your computer, working in the background. If BITS service becomes faulty then svchost.exe can become corrupted.

1. Launch the Run window by pressing the Windows key and the R key together.

2. Then, type “services.msc” in it and simply click on “OK“.

3. In the list of services find out the “Background Intelligence Transfer Service” service and double click on it to open its Properties.

4. In the Properties window, click on “Startup type:” and select “Disabled” from the drop-down list.

5. Then, click on “Apply” and “OK” to save the changes.

Close Services window and reboot your computer.

Sambit is a Mechanical Engineer By qualification who loves to write about Windows 10 and solutions to weirdest possible problems.

What is Superfetch? Can I disable the Superfetch service host? And how to disable it? Check the overview first and then see the details.

Have you ever meet this situation: '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.'

This article tells you how to deal with this bad situation. Before we start to fix the high disk usage problem, we must know what the Service Host is and Service Host Superfetch to get a better understanding of your problem.

What Is the Service Host and Service Host Superfetch

Service Host

Svchost.exe is a generic host process name for services that run from dynamic-link libraries. Microsoft started changing much of the Windows functionality from relying on internal Windows services (which ran from EXE files) to using DLL files instead. From a programming perspective, this makes the code more reusable and arguably easier to keep up to date. The problem is that you can't launch a DLL file directly from Windows the same way you can an executable file. Instead, a shell that is loaded from an executable file is used to host these DLL services. And so the Service Host process (svchost.exe) was born.

Windows requires a lot of services. If every single service ran under one Service Host process, a failure in one service could potentially bring down all of Windows. Instead, they are separated out. Services are organized into logical groups that are all somewhat related, and then a single Service Host instance is created to host each group.

Service Host Superfetch

Superfetch is part of Windows Vista and onwards. This technology allows Windows OS to manage random memory so that your apps can perform efficiently.

It helps third-party apps and critical Windows components to execute common tasks quickly. To achieve this, Superfetch stores and reads data for regularly used apps directly from RAM instead of resorting to the hard drive.

Superfetch is like drive caching. It copies all your commonly used files to RAM. This allows programs to boot faster. However, if your system doesn't have the latest hardware, Service Host Superfetch can easily cause high disk usage. High disk usage due to this service isn't always a problem. It's how this service works to optimize your system performance.

If you're using Windows 10 and you find that Service Host: Local System is taking much of your CPU, Disk or Memory usage, you're not alone. Many Windows users are reporting this problem as well. But no worries, it's possible to fix it. Read the tried and true solutions below to fix your high disk usage right now.

1. Fix Service Hosts Superfetch High Disk Usage via Disabling

SuperFetch decreases the boot time and make must-load programs more efficiently. However, it has been identified as a potential cause of disk performance issues in Windows 8 and later versions of Windows, including Windows 10. Here's how to stop this service.

Method 1. Disable Superfetch in Windows Services

Step 1. Press Windows + R or alternatively, type Run in the Windows 10 search box. Type services.msc into the 'Open' box and click the 'OK' button.

Step 2. Now find 'Superfetch'. Right-click it > select 'Properties' > click 'Stop' on the pop-up windows > click 'Disabled' from the 'startup type' drop-down menu.

Method 2. Disable Superfetch with Command Prompt

Step 1. Click on Start and search for Command Prompt, right-click on it and click 'Run as administrator' then click 'Yes' to continue.

Step 2. Type net.exe stop Superfetch andpress Enter.

Step 3. If the command above isn't valid, try net.exe stop sysmain instead.

Wait for a few minutes and see if your computer starts performing better. Or check your computer's disk usage in Task Manager. In the Processes tab, look at the % at the top of the Disk column. If it's no longer 100%, you've fixed the problem!

Method 3. Disable Superfetch Using Windows Registry

You can also disable the service host from Windows Registry. Follow the steps below to disable service host Superfetch.

Step 1. Press the Windows + R or alternatively, type 'Run' in the search box. Type Regedit into the Open box and hit enter.

Step 2. On the Registry Editor window, navigate to HKEY_LOCAL_MACHINE/SYSTEM/CurrentControlSet/Control/Session Manager/MemoryManagement/PrefetchParameters.

Step 3. Click the 'Enabled Superfetch' and change its value to 0 to disable SuperFetch. Then click the 'OK' button.

Close the Registry Editor and restart the system to see if the service host Superfetch 100% disk usage in Windows 10 is fixed.

2. Fix Service Host Superfetch High Disk Usage With Troubleshooting

Windows Update is said to be one of the causes of abnormally high CPU or Disk usage. You can run the troubleshooter to see if it's the culprit:

Step 1. On your keyboard, press the Windows logo key and click 'Control Panel'.

Step 2. View by 'Category', click 'System and Security'.

Step 3. Click 'Security and Maintenance' > 'Troubleshooting'.

Step 4. Click 'Fix problems with Windows Update'. Click Next.

Step 5. Click 'Try troubleshooting as an administrator'.

Wrap Up

We hope this tutorial has provided you with enough information about service host Superfetch high disk usage and how to disable it. You can now optimize your computer's performance and bring your disk usage back to normal by using either the Services, Command Prompt, Registry Editor, or Windows Troubleshooting method. You can try any or all of them to solve the problem.

Bonus Tip. How to Optimize Your PC with a Free Partition Manager

In addition to disabling Superfetch service to improve the performance of your computer, you can also manage your disk to improve the performance of your system. EaseUS free partition manager tool offers you co/comprehensive solutions to organize and manage your partitions in Windows 10/8/7 without effort.

• Resize/move partition, create/format/delete/clone/merge partition
• Convert FTA to NTFS, convert MBR to GPT, logical partition to primary or primary partition to logical
• Wipe out all the data on hard disk permanently with one click
• Supports 4K alignment on SSDs to maximize PC performance
• Check for errors on selected partitions and fix it

Now, download and try this free partition tool to help you manage your disk and partitions without data loss.

Step 1: Install and launch EaseUS Partition Master

Step 2: Partition Hard Drive

Shrink partition:

1. Right-click on a partition that you want to shrink and select 'Resize/Move'.

2. Drag the end of the partition rightward or leftward or adjust the space by clicking the 'Partition size' column. Click 'OK' to continue.

Extend partition:

1. To extend partition, you need to leave unallocated space next to the target partition. If not, shrink a partition as mentioned above to leave enough unallocated space behind the target partition first.

2. Then right-click on the target partition and select 'Resize/Move'.

3. Drag the target partition handle into the unallocated space to extend partition. Click 'OK' to continue.

Create partition:

1. On the main window, right-click on the unallocated space on your hard drive or external storage device and select 'Create'.

2. Set the partition size, partition label, drive letter, file system, etc. for the new partition and click 'OK' to continue.

Delete partition:

1. On the main window, right-click on the hard drive partition which you want to delete and select 'Delete'.

2. Click 'OK' to confirm.

Change partition drive letter:

1. Right-click the partition, and choose 'Change Drive Letter'.

2. Click the down arrow, choose a drive letter for the partition, then click 'OK'.

Step 3: Execute operations

Click the 'Execute Operation' button at the top corner and keep all changes by clicking 'Apply'.

When you finish all the steps, reboot your Windows 10. Go to Task Manager to see if Service Host: Local System high disk usage is solved or not. If all the solutions above all fail to help you, you can contact us and ask for help. We are very glad to help you.

People also ask

1. Is it safe to disable service host Superfetch?

Service host Superfetch is merely a memory management process. When you notice that it's always causing high disk usage, you can disable it; and it won't cause system instability. However, you may experience some delays when accessing frequently used applications, as they load faster when they service host Superfetch enabled.

2. How do I disable the Superfetch service host?

As demonstrated in solution 1, there are three ways to disable Superfetch service host, either through Services, Command Prompt, or Registry Editor in Windows 10. Jump to the corresponding parts to see details.

3. Can I disable Superfetch service Windows 10?

Yes, when you find there happens service host local system high disk usage, you can try to disable Superfetch service in Windows 10 to speed up your computer.

4. What is Superfetch, and do I need it?

Superfetch is like drive caching. It copies all your commonly used files to RAM. This allows programs to boot faster. However, if your system has the latest hardware, the Superfetch works properly. If not, Service Host Superfetch can easily cause high disk usage.