Hi, you can only use the kiosk mode. See Firefox Enterprise Kiosk mode.

Is there a way to permit the title bar to appear when kiosk mode. Our clients connect to remote desktop services and run our apps provide to them. They need the web browser to connect to one website only to perform a task. If we use kiosk mode which is a good idea they would have no way visually to see how to escape from the browser. Our concern is they would click the X at the pulldown at the top of the screen to try to exit the screen. This would wind up having a lot of desktops disconnected and timing waiting for timeout before it logs out. This would deplete our pool of desktops rapidly. Thank you for getting back to me what are your thoughts on this. Roger Bryan

Hi Roger, what if you ignore the kiosk styling for the moment and just apply the website filter.

• Filter Syntax: https://github.com/mozilla/policy-templates#websitefilter
• Implementation choices: Customizing Firefox Using Group Policy (Windows) or Customizing Firefox Using policies.json