SUMMARY Kontact does not support the MainApplication interface and cannot be told to quit STEPS TO REPRODUCE 1. { kquitapp5 kontact; } OBSERVED RESULT "Quitting application kontact failed. Error reported was:\n\n org.freedesktop.DBus.Error.UnknownObject : No such object path '/MainApplication'" EXPECTED RESULT SOFTWARE/OS VERSIONS Windows: macOS: Linux/KDE Plasma: openSUSE Tumbleweed 20230915 (available in About System) KDE Plasma Version: 5.27.8 KDE Frameworks Version: 5.110.0 Qt Version: 5.15.10 ADDITIONAL INFORMATION Work-around: { gdbus call -e -d org.kde.kontact -o /kontact/MainWindow_1 -m org.qtproject.Qt.QWidget.close; }