@Wesly.Zhang @Flood and Flood's wife I got that false positive today (with the exe getting automatically quarantined after just opening the folder it was in), with the “mame230_32bit.7z” build which can be downloaded from here: https://drive.google.com/drive/folders/1eiNztWEpk0C7CiiZXz0SMDM_eJOmb0FO It seems to have been randomly happening with certain builds for some time now, as can be read in this discussion from January, which also gives some hints on its possible reasons: https://forums.bannister.org/ubbthreads.php?ubb=showflat&Number=118317