Issue: How to fix Shell Infrastructure Host high CPU in Windows?
Hello, I have a problem with my Windows laptop. I have recently noticed that Shell Infrastructure Host high CPU – usually 50-80% when my PC is idle. Can I end this task without doing any harm? Please advise what to do otherwise.
Task Manager is a great built-in Windows element that can help users observe which processes are currently running and how many resources are used by them. While third-party applications often bring in their own processes, there are plenty of built-in processes that are used by Windows. In fact, some of them are vital for the normal operation of the system.
Some users have recently experienced an abnormal CPU usage of Shell Infrastructure Host. Under normal circumstances, it shouldn't costume more than three percent of the CPU. Unfortunately, some users reported that they've seen the process spike as high as 60%, which is surely not normal behavior.
To clarify the situation, we must first look at the process and what it does. Shell Infrastructure Host usually runs under the sihost.exe file and is a core component of any Windows operating system. Its main function is to support the start menu layout, taskbar transparency, and other graphical UI elements of Windows.
There could be multiple reasons for Shell Infrastructure Host high CPU. For example, a simple system bug could cause the issue to arise, so updating it would be the first solution we would recommend. System file corruption can also be causing the problem, so you should address that aspect as well.
Speaking of which, if you want to fix the most common Windows problems automatically, we highly recommend you try running a scan with ReimageMac Washing Machine X9 PC repair and maintenance tool. It can address corrupted files and registries, fix Blue Screen crashes, resolve bugged caches, and much more.
Solution 1. Install all Windows updates
- Type Update in Windows search and hit Enter
- Click Check for updates
- Wait till Windows downloads all the necessary files (don't forget to install all the optional updates)
- Once done, restart your system.
Solution 2. Run SFC and DISM
System File Checker and DISM commands can help you find and repair corrupted system files and remove integrity violations automatically. For that, you need to run an elevated Command Prompt – here's how:
- In Windows search, type cmd
- Right-click on Command Prompt and select Run as administrator
- When User Account Control shows up, click Yes
- In the new window, use the following command and press Enter:
- Wait till the scan is finished, and then run the following commands (press Enter after each):
DISM /Online /Cleanup-Image /CheckHealth
DISM /Online /Cleanup-Image /ScanHealth
DISM /Online /Cleanup-Image /RestoreHealth
- Once all the commands are completed, close down the Command Prompt and reboot your system.
Solution 3. Check for program conflict
You can launch the system in Clean Boot and see if Shell Infrastructure Host high CPU is gone. If that's the case, there's some third-party software causing the issue.
- Type msconfig in Windows search and press Enter
- Select Services tab
- Check the Hide all Microsoft services box and pick Disable all
- Go to the Startup tab and select Open Task Manager
- In the Task Manager, right-click on every entry and select Disable, then close the Task Manager
- Go to the Boot tab, tick Safe Boot, then click Apply and OK.
Solution 4. Uninstall third-party security software
In some cases, overly aggressive antivirus applications can cause high resource usage of the PC – users have experienced the same issue with WaasMedic Agent Exe. In order to remove security applications properly, you should employ a special removal tool provided by its vendor – you can find all of them on this list.
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