Plug-in/Active X Check Click "Refresh" or "Reload" button in your browser. QuickTime is installed properly if you see the message ìQuickTime Successfully Installedî above. If you see a broken filmstrip icon above then QuickTime is not installed. Check Adobe's plug-in help page or get the stand alone Installer. Streaming Check To check if you are able to view streaming content behind a firewall visit Adobe's Streaming Check page. Windows Internet Explorer Users: If a browser ìSecurity Warningî dialog box appears prompting you to download the QuickTime Active X Plugin, select ìYes.î The Active X plugin will automatically install.