https://bugs.winehq.org/show_bug.cgi?id=49825
--- Comment #4 from Fabian Maurer dark.shadow4@web.de --- You can set a breakpoint in GetNamedSecurityInfo, or NtQuerySecurityObject which is called. Won't help you too much though... IMHO, the problem lies probably in wineserver. It's hard to debug, so I can't help you there, I'm afraid. You could ask in IRC, #winehackers.