Windows 10: dwm crashed and log off

helllo dwm crashed and not able to change screen display brightness and screen will changed to very small resolution and resolution changing function is also no changeable in option why this happen . and I need to restart then it back to normal and after some time again this happen when I open adobe reader and open some pdfs , I resinsatlled windows from system itself but same happening

:)

 

What is causing dwm to crash?

Hello, matt__thomas

Thanks for posting your report here.

Based on the information provided in the crash log, the crash of dwm (Desktop Window Manager) is caused by an exception with the error code 8898008d. The error message states: "No HW rendering device is available for this operation." This suggests that the crash is related to a problem with the hardware rendering device, which is responsible for rendering graphics on the screen.

If we need to dig deeper into this issue, can you please share additional information such as:

1. What rendering software is currently running before the crash occurs? If it is rendering software, can you describe the name of this software.
   
2. As of now, can you share the hardware information of the current PC? For example, the hardware of your GPU/CPU/RAM/motherboard. The version of Windows 11(Press Windows+R to call run window > Type winver.exe > then take a screenshot of version and attach it here.)
   

From the log analysis results, the following are some possible causes:

1. Graphics driver issues: The crash may occur due to outdated or incompatible graphics drivers. It's recommended to update your graphics drivers to the latest version compatible with your system. Assuming that the latest driver has been installed before and caused dwm.exe to crash, please try to Roll back driver version.
   
2. System resource limitations: Insufficient system resources, such as memory (RAM) or GPU memory, could cause dwm to crash. Ensure that your system meets the minimum requirements for running graphics-intensive applications and consider closing unnecessary programs or upgrading your hardware if needed.
   

In this regard, factors that may need to be considered include software issues and hardware issues, such as:

• Graphics hardware problems: There could be an issue with the graphics hardware itself, such as a malfunctioning GPU or insufficient hardware resources. In such cases, troubleshooting or replacing the graphics hardware may be necessary.
  
• Conflicting software: Certain software applications or utilities installed on the system could interfere with the operation of dwm, causing it to crash. Try to identify any recently installed software or updates and uninstall them to see if the issue is resolved.
  

The following are some discussions about the dwm.exe program in the Microsoft Learn community. Some users have solved the problem by re-plugging the graphics card, replacing the PSU, and removing the PCIe cable or USB-C device. You can try them one by one. and see if these steps work for your situation.

DWM Crashing randomly causing Black Screen - Microsoft Q&A

If the problem persists, you can also try to upload the newly generated dump file to the your cloud drive and post the link here to share with me, which will help us discuss how to proceed next.

Best regards,



Chandy |Microsoft Community Support Specialist

 

Dwm crash

My dwm is crashing I keep getting bro brought back to the login in right away every time can’t seem to get around it what can I do to fix this?

 

Redegit there is dwm many why

Hello, Gianakl28377

Welcome to Microsoft Community.

DWM stands for Desktop Window Manager, a service that is responsible for rendering visual effects on the desktop, such as transparency, glass window frames, 3-D animations, and more1. DWM uses the registry to store and access various settings and policies related to its functionality.

The reason why you see so many DWM in registry is because each time a new session is created, DWM adds a new subkey and value under the HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\DWM registry key. This can happen when you log on, switch users, connect to a remote desktop, or run an application that creates a new session. The number of DWM in registry can also increase if some sessions are not properly terminated or cleaned up by the system.

You can use the following steps to check the number of active sessions on your system and compare it with the number of DWM in registry:

• Press Ctrl+Shift+Esc to open Task Manager.
  
• Click on the Users tab to see the list of users who are currently logged on or connected to your system.
  
• Click on the Details tab to see the list of processes that are running on your system.
  
• Sort the processes by the PID column to group them by their session identifiers (PID).
  
• Count the number of unique session identifiers that you see in the Details tab. This is the number of active sessions on your system.
  

If the number of active sessions matches the number of DWM in registry, then there is nothing to worry about. However, if the number of DWM in registry is much higher than the number of active sessions, then it might indicate that some sessions are not properly terminated or cleaned up by the system. This can cause performance issues or errors with DWM or other applications that use desktop composition.

When your screen turns yellow, it might be because you've activated night mode or other software's blue light filter. These modes adjust the screen's color temperature to make it warmer, reducing eye strain. However, they can affect the transparency effects of the Desktop Window Manager (DWM) because DWM calculates transparency based on the screen's colors.



When you turn off night mode or the blue light filter, the screen's color temperature returns to normal, but DWM's transparency effects are also turned off. This happens because DWM detects the change in screen colors and recalculates transparency. If you want to maintain DWM's transparency effects, you may need to turn off night mode or the blue light filter.

Additionally, you can ask questions in your most comfortable language; it doesn't have to be in English.

Please let us know if you have any other concerns.

Best regards

Yuhao Li

Microsoft Community Technical Support