Re-download the Roblox installer. Run RobloxPlayerLauncher.exe with administrator rights. Remove the Roblox folder. Allow Roblox through your firewall. Try installing Roblox from the Microsoft Store.

WARNING If someone asks you to generate an "rbx-player link", DO NOT do it, they can use these to join any game using your account, or even launch roblox studio with one of your games. They can do ...

This is how you can permanently set Roblox Player to run with elevated rights. Right-click on the Roblox Player desktop shortcut to select Properties. If you don’t have a shortcut for the client ...