> I'm not sure where to post this as the issue is closed:

Please open a new issue.

> I've encountered the same problem.

Why do you consider that it's the same issue?

> The crash seems to occur at random, with anything between 1 and 20 days separating consecutive crashes.

Outch. I hate such random bugs.

> I have core dumps if you're interested but am not sure where to upload them.

I don't know how to analyze a Windows core dump.

Sorry, but without more information, it will be almost impossible to fix your issue. You can try to use faulthandler to write the traceback of all Python threads where the crash occurred:
https://docs.python.org/dev/library/faulthandler.html#faulthandler.enable

Write the ouput into a file. The output is text.


Brian Curtin wrote a similar tool but more specific to Windows:
https://bitbucket.org/briancurtin/minidumper/

"minidumper writes "minidumps" for post-mortem analysis of crashes in Python or its extensions."

Problem: I don't know how to use such dump!? I guess that Visual Studio can load such minidump files.
https://msdn.microsoft.com/en-us/library/windows/desktop/ee416349%28v=vs.85%29.aspx#analyzing_a_minidump


Did you see some errors or warnings when running your application with asyncio in debug mode?
https://docs.python.org/dev/library/asyncio-dev.html

Please use at least Python 3.4.3 which embeds a recent version of asyncio, it enables more checks in debug mode.


Can you maybe send me the source code of your application?