This browser is no longer supported.
Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support.
![](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(176, 42%, 27%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EW%3C/text%3E%3C/svg%3E)
Hello,
I tried to use the WerRegisterAppLocalDump API in a packaged WinUI 3 app.
The function returns HRESULT 0, so success. But if you try to crash the app, no crash dump file is created in any directory of the app data (especially not "relative to the LocalFolder of the packaged application" as documented).
I also tried to use the API in an UWP app for testing, and there at least some dump file is created. But not "relative to the LocalFolder of the packaged application", but rather in the "AC" directory relative to the app data. Additionally, the created dump file is 10x smaller than a regular dump file in %LOCALAPPDATA%\CrashDumps and is almost unusable because it is missing information.
I just need a replacement for HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\Windows Error Reporting\LocalDumps that works for packaged apps without administrative permissions (see https://learn.microsoft.com/en-us/windows/win32/wer/collecting-user-mode-dumps).
Please let me know if this is a bug in Windows and the documentation, or if there is some other way.
Thanks!
Hi, @Whiskhub Have you checked Darran Rowe's answer? It makes sense and you shall accept. Or you post any other question any time.
Hi @Tong Xu - MSFT I appreciate Darran's answer and will accept it. But he also just confirmed my finding - the API doesn't work as documented. Is there a way you could report this to Microsoft developers? Thanks
Hi, @Whiskhub
You can send feedback to Microsoft.
https://support.microsoft.com/en-us/windows/send-feedback-to-microsoft-with-the-feedback-hub-app-f59187f8-8739-22d6-ba93-f66612949332
After that, please give me the feedback link. I'll report it internally again to attract developers' attention.
Thank you.
Hi @Tong Xu - MSFT Thanks, I have created a feedback: https://aka.ms/AAs41zy
@Whiskhub Thank you for your report and patience!!! I'll checked it. You can accept the answer now.
![](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(262.40000000000003, 13%, 35%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EDR%3C/text%3E%3C/svg%3E)
After testing this a little, at the very least, the documentation seems to be outright wrong.
If an application is a packaged desktop application with the equivalent of uap10:TrustLevel set to mediumIL, then the application will follow the regular desktop WER settings.
If an application is a packaged desktop application with the equivalent of uap10:TrustLevel set to appContainer, then WER will create a subdirectory in the AC directory named what was passed into the function and save the dumps there.
"Packaged desktop application" does include WinUI 3 applications here, because WinUI 3 runs as a library inside the desktop environment.
Thanks for your investigation! So it really seems like an API issue.
I have created a feedback item so Microsoft can hopefully resolve it: https://aka.ms/AAs41zy