Roblox won’t install for a few common reasons. Sometimes, a corrupted installer or files can be the issue. To fix this, delete any existing Roblox files and download the installer from the official Roblox website. Make sure to use RobloxPlayerLauncher.exe and not RobloxPlayerInstaller.exe, which can cause the download to freeze.
Another reason could be Windows Defender or your antivirus blocking the installation. Try temporarily disabling your antivirus or running the installer as an administrator. This can often resolve the problem.
System configuration issues might also be the cause. Reinstalling the operating system and then Roblox can sometimes solve the problem. This suggests that the issue might be with the system setup rather than the installer itself.
Sometimes, DirectX requirements can prevent Roblox from installing. Ensure that you have DirectX 11 or higher installed. Some users have reported issues with older versions of DirectX.
Local app data issues can also cause installation problems. Go to `%localappdata%`, navigate to `Roblox -> Versions`, and launch RobloxPlayerLauncher.exe from this folder. This can help complete the installation.