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Service Host: Local System High Disk, CPU and Memory Usage [100% Solved]

Updated on Dec 20, 2018 by Jean to Computer Instruction

Summary:
If Service Host: Local System is using all of your resources in Task Manager in Windows 10, 8 and 7, relax! You can effortlessly fix 99% or 100% disk usage, cpu usage or memory usage taken by Service Host Local System with a detailed instruction here.

Depend on your own case and pick up a solution within the following sections:

Restore hard drive health and optimize system [Must-try Fix]
Directly disable Service Host Local System tasks [Universal fix]
Disable Backup Intelligent Transfer Service [Most straightforward fix]
Disable Superfetch Service [Universal fix]
Disable Automatic Updates [Permament Fix]

If you see a process called Service Host: Local System is using up all of your computer or laptop resources in Task Manager in Windows 10, 8 or 7, it's time to read this post from the beginning to the end and pick up a solution to stop Service Host: Local System from taking high disk usage, CPU usage, memory usage or too much network bandwidth.

What is Service Host: Local System?

By pressing Ctrl + Alt + Del, you can easily get the quick access to Task Manager. Stay on the first Process tab, by scrolling down you should find many Service Host related processes, such as Service Host: Local System (Network Restricted), Service Host: Local Service, Service Host: Network Service, etc.

From what we learned, Service Host: Local System is the major cause of Windows 10 100% disk usage in Task Manager. So, what is exactly the term and why is it consuming resources out of control? Let me tell you.

Service Host: Local System is a bundle of system processes, or call it a generic service hosting container. It includes processes including Windows Auto Update and many required system services would be running in it. That's why it's very likely to take up huge disk, memory, RAM and even network bandwidth, draining computer resources, especially after getting a Windows 10 update.

service host local system high disk usage, cpu usage and memory usage

How to solve Service Host: Local System high disk usage, CPU usage or memory usage?

Solution 1. Restore hard drive health and optimize system

First. Download EaseUS free partition manager on your computer or laptop and launch it after install.

Download Now

 Windows 10 is supported

Next. Go to complete the whole procedure of hard drive repair and system optimization with software.

# To restore hard disk health back to normal state:

 

Step 1: Open EaseUS Partition Master on your computer. Then locate the disk, right-click the partition you want to check, and choose "Check File System".

Check Partition - Step 1

Step 2: In the Check File System window, keep the "Try to fix errors if found" option selected and click "Start".

Check Partition - Step 2

Step 3: The software will begin checking your partition file system on your disk. When it has completed, click "Finish".

Check Partition - Step 3

3_Let the software automatically check and repair hard drive errors and system file errors that happen to eat away all your available resources.

# Continue to optimize your computer by removing redundant network data, files and system logs

1_ Click System Optimize under Tools in EaseUS Partition Master.

2_ Click one by one the options for Junk File Cleanup, Large File Cleanup and Disk Optimization. All are working solutions to get rid of 99% or 100% usage of disk, CPU, and memory.

Solution 2. Directly disable Service Host Local System tasks

Step 1. Assuming that you're in the Task Manager. Expand the Service Host: Local System to see what items are using more disk, CPU or memory clearly.

Step 2. Once identified the items that are hogging your computer resources, right-click on it and select End Task.

disable service host local system tasks to fix high disk cpu and memory usage

Step 3. Repeat many times until all suspicious tasks were suspended. Meanwhile, keep an eye on the CPU, disk or memory tabs, see if the percent number is decreasing.

Step 4. Once you have identified the item that is causing the problem, right click on it and select the Open Services option.

Step 5. Go through the services on Task Manager until you find the service with the same name and right click on it. Then click Stop.

Step 6. Once you have found the service that is causing the problem, then double click on it, expand the Startup type menu and click on Disabled. Then, click on the Apply button and the OK button.

Solution 3. Disable Backup Intelligent Transfer Service

Step 1. At Windows Task Manager, click Services tab.

Step 2. On the Services window, at the bottom, you will find Open Services button. Just click on it.

disable backgroud intelligent transfer service to fix service host local system high disk cpu and memory usage issue

Step 3. A new Window will open up with a huge list of all the Services. Find the service called Background Intelligent Transfer Service there. Right click on it and click Stop.

Solution 4. Disable Superfetch Service

Step 1. Press Windows + X keys at the same time. This will bring up a menu, on which click Command Prompt (Admin).

fix service host local system high disk, cpu and memory usage with command prompt

Step 2. Now you open the Command Prompt. Type the command: net.exe stop superfetch and press Enter.

fix service host local system high disk, cpu and memory usage with command prompt

Solution 5. Disable Automatic Updates 

Step 1. Press "Windows + R" keys to openthe "Run" dialog, type: services.msc in the box and press enter.

disable automatic update to permanently fix service host local system high disk cpu and memory usage issue

Step 2. A window then pops up with a list of Services. Find Windows Update Service. Double click on Windows Update service and Windows Update Service Properties Screen will pop up.

Step 3. Locate the Startup type under General tab and select Disabled from the drop-down list. Click OK to apply the change.

Step 4. After disabling Windows Update permanently, follow the solution 2 to end task of Service Host: Local System.