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

I have been having this issue for a while where the screen turns black momentarily while using the pen in PowerPoint and Whiteboard. Sometimes PowerPoint/Whiteboard will crash. The problem seems MUCH worse lately to the point of being unusable while teaching. Always when this happens OBS will stop capturing updates from the app so new notes are not drawn. I have to close Whiteboard and start it again for OBS to resume capturing the app.

Same error in event viewer that others are seeing dwm.exe / heatcore.dll. The only thing I have to contribute is it seems to be exacerbated when streaming so when the display is being captured like when using Zoom / OBS. Maybe people using a duplicate display are also capturing the display in a way.

Also this might be correlation not causation but the crashes seem worse when the tablet gets really hot (Surface Pro 7).

And yes the fancy pens will also cause the crash but it seems to work a lot longer before it happens.

Hello again

I stopped using the pen a week ago and no crashes with touching the surface with my finger. My reliability monitor has shown no errors in the last week.

Could it be due to a calibration issue with the pen or the pen being incompatible with the touch screen?

I am happy to have a crash free computer, won't use the pen anymore. It really screwed up my computer!

Cheers

Interestingly enough, it appears that it does happen sometimes even when not using the pen. I didn't notice it, I don't know whether the screen just didn't go black or the lid was closed, but it still shows up in Reliability Monitor with the same HeatCore.dll issue. 
The reason why I noticed is that there is another effect of dwm.exe crashing: Microsoft Teams (and sometimes some other Electron-based apps ... maybe) go black (but only sometimes), so I have to restart it completely in order to use it.

Anyway, according to MS support, their technical department should get back to me in the next couple of days, MAYBE they come up with a fix. Hopefully. 

Fingers crossed.

My problem remains, at least once a day, the first time my pen touches the screen I get a DWM crash. 

Source

Desktop Window Manager

Summary

Stopped working

Date

‎4/‎23/‎2021 9:37 AM

Status

Report sent

Description

Faulting Application Path: C:\Windows\System32\dwm.exe

Problem signature

Problem Event Name: BEX64

Application Name: dwm.exe

Application Version: 10.0.19041.746

Application Timestamp: 6be51595

Fault Module Name: HeatCore.dll

Fault Module Version: 0.0.0.0

Fault Module Timestamp: 54ab4a1a

Exception Offset: 0000000000035b5d

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: f2cb

Additional Information 4: f2cb04e9d7bee3b9ba950fa6b38410fa

Extra information about the problem

Bucket ID: 3af1b524c9df8794d117428742533340 (1231526171809887040)

Interestingly enough, it appears that it does happen sometimes even when not using the pen. I didn't notice it, I don't know whether the screen just didn't go black or the lid was closed, but it still shows up in Reliability Monitor with the same HeatCore.dll issue. 
The reason why I noticed is that there is another effect of dwm.exe crashing: Microsoft Teams (and sometimes some other Electron-based apps ... maybe) go black (but only sometimes), so I have to restart it completely in order to use it.

Anyway, according to MS support, their technical department should get back to me in the next couple of days, MAYBE they come up with a fix. Hopefully.

Hello

My crashes happen even when running on battery, it doesn't make a difference plugged or unplugged

My problem has been solved....I don't use the pen anymore.

No pen, no crashes.

It must be something to do with the pen touching the screen.