Same here, although after it insta-crashed when I started using the pen I continued using it for a really long time and it didn't crash again. I feel like it's possible the situation is improved. More testing needed.
Repeated Daily Crashes of Desktop Window Manager in Reliability Monitor When Using Pen
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(128, 8%, 22%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EA%3C/text%3E%3C/svg%3E)
Anonymous
Is anyone also having problems? I am all updated to 2009, all drivers updated. SFC reports no issues. Occasionally, when there's a crash my screen goes black for a few seconds.
Source
Desktop Window Manager
Summary
Stopped working
Date
11/12/2020 1:07 PM
Status
Report sent
Description
Faulting Application Path: C:\Windows\System32\dwm.exe
Problem signature
Problem Event Name: BEX64
Application Name: dwm.exe
Application Version: 10.0.19041.508
Application Timestamp: cd97c98b
Fault Module Name: HeatCore.dll
Fault Module Version: 0.0.0.0
Fault Module Timestamp: c6130bfa
Exception Offset: 0000000000035afd
Exception Code: c0000409
Exception Data: 0000000000000002
OS Version: 10.0.19042.2.0.0.768.101
Locale ID: 1033
Additional Information 1: b111
Additional Information 2: b111fda7573a1e10441015376b653053
Additional Information 3: 02f1
Additional Information 4: 02f1489b0e3ef25dd4a9c89674c90c7c
Extra information about the problem
Bucket ID: 0329fc9be08ddbf2c3f9318478ced3bf (1439236000953848767)
Surface | Surface Pro | Install and update
Locked Question. This question was migrated from the Microsoft Support Community. You can vote on whether it's helpful, but you can't add comments or replies or follow the question.
92 answers
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Anonymous
2021-05-01T17:26:18+00:00 -
Anonymous
2021-04-30T13:47:04+00:00 Update: It didn't fix it.
I just installed it and tried to use the pen right afterwards, but dwm.exe crashed.
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Anonymous
2021-04-30T13:28:53+00:00 Thanks for bringing this to my attention, I am now in the process of installing it and will post my experience as soon as I notice something.
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Anonymous
2021-04-30T09:30:44+00:00 It is almost a month that I have exactly the same problem. having read all 8 pages of posts I am a little disappointed by Microsoft. On April 28 a preview update (KB5001391) is released which has the following among the list of addressed issues :
- Addresses an issue that causes DWM.exe to stop working in some cases.
those who installed, please update us with the outcome.
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Anonymous
2021-04-26T14:27:31+00:00 Updating my previous post only to let you know that searching for the exception brings (also) to this StackOverflow question. Seems a buffer-related error, maybe (in our case) the buffer used to process the touch/pen movements on the panel.
https://stackoverflow.com/questions/23409809/windows-7-exception-code-0xc0000409