Is there an option to let user see (eg open) what's inside CRT file by using winrt::Windows::System::Launcher::LaunchFileAsync() API in Windows store app? App is reading certificate (DER encoded) from the server, storing it into a temporary file using winrt::Windows::Storage::FileIO API (into winrt::Windows::Storage::ApplicationData::Current().TemporaryFolder(). At present LaunchFileAsync is getting access denied error. Only workaround I've found is to use winrt::Windows::System::Launcher::LaunchFolderAsync() to show that folder to user and let It double click on that crt file. It would be nice to let LaunchFileAsync open certificate view window instead.