Windows shell experience host hogging 68% of my CPU.

What is this new problem that started happening this evening?  Can I end the task without doing any harm?  That is, if I can open Task manager when it happens!!!!! 
Hi I'm Greg, a volunteer installation specialist and 8 year WIndows MVP here to help you.

Restart PC, go over this checklist to make sure the install is set up correctly, optimized for best performance, and any needed repairs get done: http://answers.microsoft.com/en-us/windows/wiki...

But remember that Factory or Upgrade installs are inferior installs which most enthusiasts won't even run because they'd expect endless issues. Consider doing the Clean Install in this link which compiles the best possible install that will stay that way as long as you stick with the tools and methods given: http://answers.microsoft.com/en-us/windows/wiki...


There is also an automated Refresh that reinstalls WIndows while shedding corrupting factory bloatware, saves your files, but doesn't clear the drive to get it cleanest: https://www.howtogeek.com/265054/how-to-easily-...

I hope this helps. Feel free to ask back any questions and let us know how it goes. I will keep working with you until it's resolved.
----------------------------------
I am a volunteer and not Microsoft.

Over 100,000 helped in forums for 10 years. I don't quit for those who are polite and cooperative.

Windows MVP 2010-20

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We are volunteers willing to help you try to resolve this issue.

You can always restart the system. Ending a process might stop the system though you can restart.

In Task Manager - Processes tab - on left of that process expand the arrow to see if that helps determine cause.

I would do Performance check for the entire system.

If using an SSD or hybrid hard drive be sure it has the latest firmware.

Try the Clean Boot method to see if a startup program is involved - if so it is a process of elimination :

Right Click the start button - Command Prompt (Admin) OR Windows PowerShell (Admin) - at the prompt type in

MSCONFIG

and hit enter

How to perform a clean boot in Windows
https://support.microsoft.com/en-us/kb/929135

Other programs to help :

Autoruns - Free - See what programs are configured to startup automatically when your system boots and you login. Autoruns also shows you the full list of Registry and file locations where applications can configure auto-start settings.
http://technet.microsoft.com/en-us/sysinternals...

Process Explorer - Free - Find out what files, registry keys and other objects processes have open, which DLLs they have loaded, and more. This uniquely powerful utility will even show you who owns each process.
http://technet.microsoft.com/en-us/sysinternals...

Process Monitor - Free - an advanced monitoring tool for Windows that shows real-time file system, Registry and process/thread activity. It combines the features of two legacy Sysinternals utilities, Filemon and Regmon, and adds an extensive list of enhancements including rich and non-destructive filtering, comprehensive event properties such session IDs and user names, reliable process information, full thread stacks with integrated symbol support for each operation, simultaneous logging to a file, and much more. Its uniquely powerful features will make Process Monitor a core utility in your system troubleshooting and malware hunting toolkit.
https://docs.microsoft.com/en-us/sysinternals/d...

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Do all of these :

If you had a 3rd party antivirus on the OS you upgraded OR if you have one now uninstall it and then run its maker's removal tool. Use Windows Defender which in Windows 8/8.1/10 is a full antivirus. Despite all the hype out there
Windows Defender and the Windows Firewall are true superstars.

List of anti-malware program cleanup/uninstall tools
http://answers.microsoft.com/en-us/protect/wiki...

Uninstallers (removal tools) for common antivirus software
http://kb.eset.com/esetkb/index?page=content&am...

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Check this :

Right Click Start button - Control Panel - Troubleshooting - on right side click View all - System Maintenance.

--------

Tips to improve PC performance in Windows 10 <-- read this link
https://support.microsoft.com/en-us/help/400201...

The below is additional help with some of the methods in the "Tips to improve...." link.

Windows Key + X - Command Prompt (Admin) OR Windows PowerShell (Admin)

(Run these one line at a time.)

SFC /scannow

Note if that shows uncorrected errors - do the below regardless.

When that completes run these :

DISM /online /cleanup-image /scanhealth

DISM /online /cleanup-image /restorehealth

Note if that shows any uncorrected errors - do the below regardless.

Then restart the computer.

------


Be sure you are running the latest available BIOS, chipset drivers, and all the major device drivers.


Check with System Maker (Motherboard Maker for custom systems) for updates to the BIOS, low level chipset drivers, and the major on-board and separate device drivers. Run DriverView - set VIEW to Hide Microsoft drivers - update those without Dump in their name.


DriverView - Free - utility displays the list of all device drivers currently loaded on your system. For each driver in the list, additional useful information is displayed: load address of the driver, description, version, product name, company that created the driver, and more.
http://www.nirsoft.net/utils/driverview.html


For Drivers check System Maker as fallbacks and Device Maker's which are the most current. Right Click Start Button - Right Click Start Button - Display Adapter - write down the make and complete model of your video adapter - double click - Driver's tab - write down the version info. Now click UPdate Driver (this may not do anything as MS is far behind certifying drivers) - then Right Click - Uninstall - REBOOT this will refresh the driver stack.


Repeat that for Network - Network Card (NIC), Wifi, Sound, Mouse and Keyboard if 3rd party with their own software and drivers and any other major device drivers you have.

Now go to System Maker's site (Dell, HP, Toshiba as examples) (as rollback) and then Device Maker's site (Realtek, Intel, Nvidia, ATI as examples) and get their latest versions. (Look for BIOS, Chipset, and software updates at System Maker's site while there.)

Download - SAVE - go to where you put them - Right Click - RUN AD ADMIN - REBOOT after each installation.

Always check in Device Manager - Drivers tab to be sure the version you are installing actually shows up. This is because some drivers rollback before the latest is installed (sound drivers particularly do this) so install a driver - reboot - check to be sure it is installed and repeat as needed.

Repeat at Device Makers - BTW at Device Makers DO NOT RUN THEIR SCANNER - check manually by model.

Manually look at manufacturer's sites for drivers - and Device Maker's sites.
http://pcsupport.about.com/od/driverssupport/ht...

Please let us know the results and if you need further assistance. .
Rob Brown - Microsoft MVP - Windows Insider MVP 2016 - current
Microsoft MVP Windows and Devices for IT 2009 - 2020

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Thank You

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I have had this laptop since 2014, and it came with Windows installed.  I don't have a product key, but even if I did, the steps outlined in the instructions are too complicated.

This problem just started happening tonight, and has occurred three times.  I have restarted. 

If it happens again, can I end the Windows shell experience host?

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Potential Causes of Shell Experience Host using too much CPU and RAM:

Desktop Background set to Slide Show
Theme Accent color set to 'Automatically pick an accent color from my background'

Potential Causes of Shell Experience Host using too much CPU and RAM:

Desktop Background set to Slide Show
Theme Accent color set to 'Automatically pick an accent color from my background'

Also, Open he settings App
In the Search Box, type mainetnance
Click 'Perform required maintenance tasks automatically'
Click next and run as Administrator
___________________________________________________________________

Power to the Developer!

MSI GV72 - 17.3", i7-8750H (Hex Core), 32GB DDR4, 4GB GeForce GTX 1050 Ti, 256GB NVMe M2, 2TB HDD

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Thank you. 

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Glad to help, if you have any more questions, please contact us here at MS Community!
___________________________________________________________________

Power to the Developer!

MSI GV72 - 17.3", i7-8750H (Hex Core), 32GB DDR4, 4GB GeForce GTX 1050 Ti, 256GB NVMe M2, 2TB HDD

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The problem resolved itself.  I shut down the computer, and when I brought it up the next day, the issue was no longer there. 

Thank you for your suggestions - I would have tried them if the problem did not go away.

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Question Info


Last updated August 1, 2020 Views 3,978 Applies to: