How to get Inno Setup to unzip a file it installed (all as part of the one installation process)

You can use an external command line tool for unzipping your archive, see here for example. Put it in your [Files] section: [Files] Source: “UNZIP.EXE”; DestDir: “{tmp}”; Flags: deleteafterinstall Then call it in your [Run] section, like this: [Run] Filename: “{tmp}\UNZIP.EXE”; Parameters: “{tmp}\ZipFile.ZIP -d C:\TargetDir” (You’ll probably want to take your target directory from a … Read more