In project1 of InstallShield2016, use LaunchAppAndWait() and the "hide_progress" parameter to call project2 of InstallShield2016. In Win8.1 and Win2016, the dialog box and background of project 2 can be displayed on project 1. In Win10, Win2019 and Win2022, the dialog box and background of project 2 cannot be displayed on project 1.   refer to the attached documents. Among them, project.zip is the installer project, and setup.zip is the installer made by project. The phenomenon can be reproduced by executing setup.exe in setup.zip. ... View more