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DWM.exe process stops responding when you repeatedly close and open the lid in Windows 10, version 1809

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Symptoms

Consider the following scenarios.

Scenario 1

  • You plug a High-Definition Multimedia Interface (HDMI) monitor into a laptop computer that is running Windows 10, version 1809.
  • The monitor is configured to operate at 4K resolution.
  • You repeatedly play a 4K H264 video in Movies & TV on the computer.
  • In Control Panel, you open the Advanced settings screen of the Power Options item, and then you set Lid close action as Do nothing.
  • While the 4K video is playing back, you repeatedly close and open the computer lid.

Scenario 2

  • You connect two 4K monitors to a Thunderbolt 3 docking station.
  • You connect a laptop that has a 4K solution monitor to the docking station, and then you configure a triple 4K display configuration in either "clone" or "extend" mode.
  • You repeatedly undock and redock the laptop.

In these scenarios, the Desktop Windows Manager (DWM.exe) process stops responding.

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Cause

This problem occurs because of an issue in the Microsoft DirectX Video Memory Management (Dxgmms2.sys) component. This is not a hardware issue.

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Resolution

To fix this problem, upgrade the computer to the latest version of Windows 10.

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Keywords: An application or process hangs or crashes, kbContentAuto, kbSupportTopic

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Article Info
Article ID : 4502866
Revision : 7
Created on : 5/14/2019
Published on : 5/14/2019
Exists online : False
Views : 381