Hence, if the scenario is applicable, the first thing you should do is download the Roblox installer file again from its official website. 2] Run RobloxPlayerLauncher.exe with administrator rights ...

1] Launch Roblox and/or RobloxPlayerLauncher as an administrator When you try to install Roblox, it creates certain files on your system that get triggered during the installation and launching ...

If lack of admin\ access is the culprit for Roblox wont download and install problem, running Robloxplayerlauncher as an administrator gives permission to access files to completely install Roblox.