The only other thing I can think of that might be different from your setup @Eli Zaretskii is the OS version… I am running W11 21H2.. [cid:image002.png@01D92631.E8561970] Sent from Mail for Windows From: Alex Matei Sent: Thursday, January 12, 2023 2:57 AM To: Eli Zaretskii; Robert Pluim Cc: 45821@debbugs.gnu.org Subject: RE: bug#45821: Emacs UDP support on Windows I don’t know – at least wasn’t able to pinpoint something given that even if I run the networking tests under GDB, my Emacs just hangs while running the tests, and I have to press C-g to unblock the test run.. Easy repro: * Start Emacs (official build 28.1): typically via runemacs.exe * Load network tests (load-file "../emacs-sourcecode/test/lisp/net/network-stream-tests.el") * (ert-run-tests-interactively) Expected: * All tests pass Actual: * Test suit executes, and around test #4 you hit a snag, it hangs, and you need to press C-g to unblock it Sent from Mail for Windows From: Eli Zaretskii Sent: Thursday, January 12, 2023 2:46 AM To: Robert Pluim Cc: matei.alexandru@live.com; 45821@debbugs.gnu.org Subject: Re: bug#45821: Emacs UDP support on Windows > From: Robert Pluim > Cc: matei.alexandru@live.com, 45821@debbugs.gnu.org > Date: Thu, 12 Jan 2023 11:24:45 +0100 > > Is it worth me trying to get emacs and the tests to run from cmd.exe? I don't see how would that be different? And what exactly are the problems that make this sound like it doesn't work OOTB? I regularly run tests in an interactive session I start from cmd.exe or from GDB, and it always works. > At the moment that has dll problems, but Iʼm sure theyʼre fixable. What "dll problems"?