How do I make desktop window manager use less CPU?

FIX: Desktop Window Manager high memory usage

by Claudiu Andone

Windows & Software Expert

Oldtimer in the tech and science press, Claudiu is focused on whatever comes new from Microsoft. His abrupt interest in computers started when he saw the first Home Computer as a kid. However, his... Read more

Posted: Jun 3, 2021

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The Desktop Window Manager high memory issue may be caused by a recent Intel driver bug.
You should restart a Windows process as indicated below in order to save memory usage.
Another good solution is to update your drivers with a reliable third-party software.
If you perform a full system scan, you can fix even more errors along the way.

Desktop Window Manager (dwm.exe) is a window manager that is responsible for the Windows 10 graphics effects like the Flip3D and the transparent windows or the live taskbar thumbnails.

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FIX: Desktop Window Manager high memory usage
How do I fix the Desktop Window Manager high memory use?
1. Restart File Explorer from Task Manager
2. Update or roll back the Intel graphics driver
3. Run a full system scan

Its a regular process that you will find in the Windows Task Manager running smoothly most of the time.

However, sometimes, this can go wrong and start consuming too many resources, causing black screen errors or software crashes.

Here is how a user complains on Reddit:

Windows Process, Desktop Window Manager uses incredible amounts of resources after a few hours of computer usage; causes black screens and software crashes.

Its obviously a serious matter and although it doesnt have an official answer yet, another user points out that is caused by a recent Intel driver bug.

How do I fix the Desktop Window Manager high memory use?

1. Restart File Explorer from Task Manager

Right-click on a free space from your taskbar, and select Task Manager.
Locate the Windows Explorer process and click on the Restart button from the lower right part of your screen.

This is only a workaround described by one of the users who were confronted with the same problem but if it worked for him, its worth giving it a try.

2. Update or roll back the Intel graphics driver

Right-click the Start button and select Device Manager.
Expand the Display adapter, right-click on your graphics driver, and select Update from the menu.
Select the top option, Search automatically for drivers.
If you get a message The best drivers for your device are allready installed, you can also go to the manufacturers website and check if they have a new one for your GPU.
You can also click on the Search for updated drivers on Windows Update option that will bring you to the Windows Updates section.
Click on the Optional updates option and look for any driver updates.

We totally understand if this driver update process gives you a little bit of a headache. However, there is a faster and more convenient way of updating your drivers by using a dedicated, third-party software.

The solution recommended below will update and fix all your drivers, not only the graphics driver, in a single shot, automatically and effortlessly.

3. Run a full system scan

Click onStartand chooseSettings.
Go toUpdate & Security section.
Open theWindows Securitytab, and click on Virus and Threat protection.
Scroll down and select Scan Options.
ChooseMicrosoft Defender Offline Scan, and click theScan Nowbutton.
Make sure you have saved your work and close all the open programs.
Click theScanbutton to restart your PC.

Windows will shut down and perform an offline scan. Once done, thePCwill automatically restart. Afterwards, check if the Desktop Window Manager still consumes too many resources.

Hopefully, by applying these solutions you will be able to fix the Desktop Window Manager high memory issue.

Check out our comprehensive guide if Desktop Window Manager has stopped working and closed, and fix it in no time.

For any other viable solutions, leave them in the comments section, so everybody can benefit from that knowledge.