How to Fix ‘Shell Infrastructure Host’ High CPU Usage (7 Methods)

Pro Windows users have a habit of checking Task Manager at regular intervals. They check it whenever they feel their computer is slow or to find out which processes are using up the resources.

Upon a deeper look into the Task Manager, many Windows users have found ‘Shell Infrastructure Host’ running and raising the bars for CPU and Memory usage. So, if you are a Windows user and noticed the same process causing high CPU and Memory usage, continue reading the article.

In this article, we will discuss what exactly is ‘Shell Infrastructure Host‘ is and why it raises the CPU and Memory Usage when running in the background. Also, we will be discussing a few best methods to fix Shell Infrastructure Host high CPU and Memory Usage problems. Let’s check out.

What is ‘Shell Infrastructure Host’ on Task Manager?

The Shell Infrastructure Host is a very important Windows Process, and it’s running in the background for a very important reason.

The ‘Shell Infrastructure Host’, also known as sihost.exe, is a system process that handles various visual aspects of the operating system.

Your desktop background, pop-up notifications, the appearance of the taskbar, and a few other parts of the graphical user interface are handled by the Shell Infrastructure Host process in Windows.

If you are using a stable build of the Windows operating system, the Shell Infrastructure Host process is likely to run in the background and consume a small amount of Memory and CPU usage. However, sometimes due to specific problems, the same process can raise the CPU & RAM usage and freeze your computer.

Fix Shell Infrastructure Host High CPU Usage?

Well, if you are experiencing problems due to Shell Infrastructure Host high CPU usage, you can make certain changes to your computer to resolve the issue. Here are the best ways to fix the Shell Infrastructure Host high CPU usage problem.

1. Restart your computer

Before trying anything else, you first need to restart your Windows computer. Restarting can sometimes resolve the most complicated problems of your computer; this includes system processes raising the CPU and RAM resource consumption.

Some apps may prevent the Shell Infrastructure Host from functioning, resulting in high CPU and RAM resources. So, before making any changes, make sure to restart your computer.

To restart your Windows PC, click the Windows Start button and Power menu and select Restart. This would restart your Windows computer.

2. Run the System Maintenance Troubleshooter

System Maintenance Troubleshooter has a few links with the Shell Infrastructure Host. Hence, you can run it to resolve the high CPU and Memory usage caused by the same process. Here’s what you need to do.

1. First, click on Windows Search and type in Control Panel. Next, open the Control Panel app from the list.

2. When the Control Panel opens, click on Troubleshooting.

3. On the Troubleshooting screen, click the View all button on the left pane.

4. Now, you will see a list of all available troubleshooters. Find and click on System Maintenance.

5. On the next prompt, check the ‘Apply repairs automatically‘ prompt and click on the Next button.

That’s it! You must follow the on-screen instructions to complete the system maintenance troubleshooting part.

3. Check for Program Conflicting with the Process

You can boot your computer into safe mode and check whether the ‘Shell Infrastructure Host’ process is still causing high CPU or Memory usage. If there’s no such issue in a clean boot or Safe mode, you must find the problematic third-party software.

It’s pretty easy to find all installed software in Windows; you can access the Control Panel and remove all suspicious programs. Alternatively, you can look closely at the Task Manager to find programs running in the background without your consent.

If you find any apps that shouldn’t be on your computer, it’s recommended to uninstall them.

4. Repair or Reset the Photos App

Well, the Photos app of Windows 10/11 is another prominent reason for Shell infrastructure host high CPU usage. Corrupted Microsoft Photos installation files are what triggers the issue.

Hence, you can try repairing or resetting the Microsoft Photos app to resolve the issue. Here’s what you need to do.

1. First, click on Windows Search and select ‘Settings‘.

2. On Settings, switch to the Apps section.

3. Next, on the right side, select ‘Installed Apps‘.

4. Now, find Microsoft Photos and click on the three dots beside it and select ‘Advanced Options‘

5. On the next screen, scroll down and click on ‘Repair‘. This will repair the Microsoft Photos app.

 

6. If repairing didn’t help, click the ‘Reset‘ button underneath the Repair button.

That’s it! After making the changes, make sure to restart your Windows computer.

5. Run an Antimalware Scan

Windows Defender is a great security program that ships with Windows 10/11. You can use it to run a full antimalware scan on your system. There are various ways to scan with Windows Security; here’s the easiest.

1. Click on Windows Search and type Windows Security. Next, open the Windows Security app from the list.

2. When the Windows Security app opens, click on the Virus & threat protection tab.

 

3. On the right side, click on the Scan options.

4. On the Scan options, select ‘Full Scan‘ and click the Scan Now button.

That’s it! This will run a full scan on your system. The full scan option will check all files and running programs on your hard disk. However, the scan could take up to one hour to complete.

6. Run the SFC/DISM Command

Another best way to resolve ‘Shell Infrastructure Host’ high CPU usage is by running the SFC and DISM commands. Both commands are designed to resolve problems associated with corrupted system files. Here’s what you need to do.

1. Click on Windows Search and type in CMD. Next, right-click the Command Prompt and select ‘Run as administrator‘.

2. When the command prompt opens, type in sfc /scannow and press Enter.

3. If the SFC command returns an error, you need to execute this command:

DISM /Online /Cleanup-Image /RestoreHealth

That’s it! The DISM command may take a few minutes to complete. You must wait until the command finishes fixing all your corrupted system files.

7. Update your Windows Operating System

If nothing worked for you, updating your Windows operating system is the remaining option. Updating Windows will likely rule out bugs or glitches that may conflict with the Shell Infrastructure host process.

Also, keeping your system updated is always a good idea to enjoy the new features and enhanced security & privacy options. To update Windows, open Settings > Windows Update > Check for Update.

Windows 10/11 will automatically check for updates. If it finds any updates available for your computer, it will install them automatically.

Also read: How to Fix CxUIUSvc Service High CPU & RAM Usage (5 Ways)

So, these are the few best methods to resolve ‘Shell Infrastructure Host’ high CPU usage on Windows computers. Let us know in the comments below if you need more help fixing the sihost.exe high CPU usage. Also, if the article helped you, share it with your friends.

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