1] Run Windows Store Apps Troubleshooter The very first thing you should do when you notice that the mouse cursor is going off screen on Roblox is to run Windows Store apps troubleshooter.

It's a little bit more straightforward to add a player on the ROBLOX Player. At the top of the home screen, you'll see "Friends" and then a circle, that has an icon of two players, saying Add Friends.

To download Roblox on a PC, you need to be running Windows 7 or newer. The gaming platform is also available on Mac, iOS, Android, and Xbox One.