What does Shell Infrastructure Host high CPU do on your Windows? Some people find the Shell Infrastructure Host high CPU has high CPU usage on Windows, which usually means something wrong happens and you need to check and fix it. this post on MiniTool Website will teach you to cope with that.

What Is Shell Infrastructure Host?

To fix Shell Infrastructure Host high CPU usage, you need to know what the Shell Infrastructure Host is. Shell Infrastructure Host, also name sihost.exe, is used to create and maintain the graphics user interface and manage the outlook of desktop backgrounds, pop-up notifications, and taskbar.

In processing the startup of essential UI elements, Shell Infrastructure Host only consumes a small amount of CPU and RAM resources. Therefore, if you encounter the Shell Infrastructure Host having high CPU usage, that’s an abnormal phenomenon.

It is possible that a virus or malware disguises this process to avoid your attention so that all kinds of attacks can be executed. Or some glitches or bugs occur on your Windows. For specific fixes, please read the next part.

How to Fix Shell Infrastructure Host High CPU?

Apply Some Preliminary Checks

There are some basic tips you can check first.

  • Make sure your Windows is up to date.
  • Restart your computer.
  • Restart the Shell Infrastructure Host process. You can find the Shell Infrastructure Host process in Task Manager and choose End task. Restart your computer and the process will resume.
  • Ensure your graphics drivers are up-to-date.
  • Disable a few of these unnecessary features or tune them slightly in Windows personalization settings.

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Fix 1: Run System Maintenance Troubleshooter

If you have tried those basic tips and nothing changes, you can run your System Maintenance Troubleshooter.

Step 1: Open your Control Panel by typing it in the search bar and change the View by: as Small icons.

Step 2: Click View all in the left panel and then System Maintenance.

choose System Maintenance

Step 3: In the pop-up window, choose Advanced and then uncheck the Apply repairs automatically option to click Next.

uncheck Apply repairs automatically

Step 4: When the troubleshooter has finished, you can follow the instruction on the screen to choose to troubleshoot as an administrator or view the report details of the troubleshooter.

Then restart your computer to see if the Shell Infrastructure Host high CPU has been fixed.

Fix 2: Run a Microsoft Defender Malware Scan

As we have mentioned above, to fix Shell Infrastructure Host high CPU usage, you need to exclude the possibility that the process is a virus or malware.

Go to Start > Settings > Update & Security > Windows Security > Virus & threat protection. Then in Scan options, please choose Full scan or Custom scan to specifically scan for Shell Infrastructure Host.

choose Custom scan

The process won’t last too long; after that, please follow the screen instruction to troubleshoot that.

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Fix 3: Run SFC or DSIM

Besides, you can run SFC or DSIM to fix Shell Infrastructure Host high CPU on Windows.

Run SFC

Step 1: In the search bar, type in Windows Powershell and run it as an administrator.

Step 2: Enter the following into the command line and press Enter to run it: sfc /scannow.

Then you need to wait for a while. SFC will start scanning and repairing any broken system components.

Run DSIM

Step 1: Run your Windows Powershell as an administrator.

Step 2: Input the command and press Enter.

DISM.exe /Online /Cleanup-Image /Restorehealth

You need to wait for a couple of minutes until the process finishes.

Then you can check if the Shell Infrastructure Host high CPU has been fixed.

Bottom Line:

If you have encountered the Shell Infrastructure Host high CPU usage issue, you can follow the above methods to fix it. In most cases, it can be easily fixed. Hope this article can be useful for you.

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