When connecting to remote windows host, the connection is setup, but the (local)window to show the remote-desktop in is _immediately_ killed. I update from opensuse 42.3 to opensuse 15.0 ; before update the session did work. In 43.2 the krdc version is/was 17.04 snip from messages file: 2018-09-19T14:32:32.648988+02:00 lxdt-papajohns kwin_x11[1897]: QXcbConnection: XCB error: 3 (BadWindow), sequence: 58687, resource id: 65011717, major code: 19 (DeleteProperty), minor code: 0 2018-09-19T14:32:32.661576+02:00 lxdt-papajohns kwin_x11[1897]: QXcbConnection: XCB error: 3 (BadWindow), sequence: 58697, resource id: 65011717, major code: 19 (DeleteProperty), minor code: 0 2018-09-19T14:32:32.662944+02:00 lxdt-papajohns kwin_x11[1897]: QXcbConnection: XCB error: 3 (BadWindow), sequence: 58698, resource id: 65011717, major code: 18 (ChangeProperty), minor code: 0 2018-09-19T14:32:32.664877+02:00 lxdt-papajohns kwin_x11[1897]: QXcbConnection: XCB error: 3 (BadWindow), sequence: 58699, resource id: 65011717, major code: 19 (DeleteProperty), minor code: 0 2018-09-19T14:32:32.666302+02:00 lxdt-papajohns kwin_x11[1897]: QXcbConnection: XCB error: 3 (BadWindow), sequence: 58700, resource id: 65011717, major code: 19 (DeleteProperty), minor code: 0 2018-09-19T14:32:32.667797+02:00 lxdt-papajohns kwin_x11[1897]: QXcbConnection: XCB error: 3 (BadWindow), sequence: 58701, resource id: 65011717, major code: 19 (DeleteProperty), minor code: 0 2018-09-19T14:32:32.669643+02:00 lxdt-papajohns kwin_x11[1897]: QXcbConnection: XCB error: 3 (BadWindow), sequence: 58702, resource id: 65011717, major code: 7 (ReparentWindow), minor code: 0 2018-09-19T14:32:32.671023+02:00 lxdt-papajohns kwin_x11[1897]: QXcbConnection: XCB error: 3 (BadWindow), sequence: 58703, resource id: 65011717, major code: 6 (ChangeSaveSet), minor code: 0 2018-09-19T14:32:32.689086+02:00 lxdt-papajohns kwin_x11[1897]: QXcbConnection: XCB error: 3 (BadWindow), sequence: 58704, resource id: 65011717, major code: 2 (ChangeWindowAttributes), minor code: 0 2018-09-19T14:32:32.690543+02:00 lxdt-papajohns kwin_x11[1897]: QXcbConnection: XCB error: 3 (BadWindow), sequence: 58705, resource id: 65011717, major code: 10 (UnmapWindow), minor code: 0 2018-09-19T14:32:32.692002+02:00 lxdt-papajohns kwin_x11[1897]: QXcbConnection: XCB error: 3 (BadWindow), sequence: 58727, resource id: 65012076, major code: 18 (ChangeProperty), minor code: 0 2018-09-19T14:32:32.734445+02:00 lxdt-papajohns kwin_x11[1897]: QXcbConnection: XCB error: 3 (BadWindow), sequence: 58784, resource id: 31457345, major code: 18 (ChangeProperty), minor code: 0
Cancel this bug, it is not a KDE-bug, it is something in krdc, where it searches for the 'shared media' /media; and if that folder does not exist, the window-session is killed. Solution was to either create the folder, or remove the statement in 'Share media' box.
Thanks for the update; changing status.