Repeated Daily Crashes of Desktop Window Manager in Reliability Monitor When Using Pen

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)

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.

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92 answers

Anonymous

2021-03-28T17:15:56+00:00

Also got a crash while connected to power, so definitely not a fix unfortunately.
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Anonymous

2021-03-29T03:00:37+00:00
This might work folks. I am trying the Regedit fix for the next week.

///

Hey can you try this workaround after updating firmware from here: https://www.microsoft.com/en-us/download/details.aspx?id=100419

Try this workaround:
- Boot into safe mode
- as administrator, take ownership of this file (google for the process on how to take ownership of system files in Windows 10) c:\windows\system32\heatcore.dll
- rename heatcore.dll to heatcore.dll.bak
- reboot
I think if you do this, the pen will still work but without the tilt feature.

Also, can you report the content of this regkey? Heatcore.dll refers to it:
```
 HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\Heat
```
If a device is listed here, changing the devicename to some random letters may workaround the issue.

I think either approach will prevent the "HEAT" API from working which I believe is some internal Microsoft real-time pen input processing deal to detect which way you're gripping the pen, compute pen vs tablet angle, compute parallax compensation, and stuff like that.

SOURCE

https://dancharblog.wordpress.com/2021/03/29/surface-pro-7-7-black-screen-dwm-exe-crashes-when-using-pen-i-have-a-workaround/
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Anonymous

2021-04-09T15:08:35+00:00

There were a bunch of driver and firmware updates in Windows Update today. They did NOT fix this, it is super annoying at this point to see Microsoft push out updates which don't actually fix the issue.
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Anonymous

2021-04-09T22:56:15+00:00

Hi Ja_Mo

How useless. I find that my crashes happen more at night time???

My brother who is an IT tech suggested a cleanup of my computer...to reinstall windows ...which I am not sure will fix it due to the updates that you just mentioned!

Cheers
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Anonymous

2021-04-10T09:19:34+00:00

Don't do that, that is absolutely useless! I wanted several hours on a clean install using the recovery image and issue persisted. 0/10 not worth the effort.

Ask your brother to take a closer look instead, that advice was so generic it could have come from Microsoft support.

Anyway, good luck fixing it
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