On Windows, using a debug build: 1. In console, start 'soffice --headless' 2. Press Ctrl+C ==> an application error dialog appears. The failing assertion is in RequestHandler::~RequestHandler (desktop/source/app/officeipcthread.cxx), mIpcThread is not empty. Expected result: the process must exit cleanly.
https://gerrit.libreoffice.org/c/core/+/151261
Mike Kaganski committed a patch related to this issue. It has been pushed to "master": https://git.libreoffice.org/core/commit/d7823e0266d38dd83d7f824f6bafb3898ccbca75 tdf#155122: implement CtrlHandler on Windows It will be available in 7.6.0. The patch should be included in the daily builds available at https://dev-builds.libreoffice.org/daily/ in the next 24-48 hours. More information about daily builds can be found at: https://wiki.documentfoundation.org/Testing_Daily_Builds Affected users are encouraged to test the fix and report feedback.