Now the AppData folder will appear. Go into the Local folder to find the Roblox folder. Delete the entire Roblox folder. Run the installer as Administrator.

Now, find the Roblox folder in the opened directory and double-click on it to open it. After that, right-click on the blank space in the folder and select the New > Folder option.

Fix #3: Update Roblox installation files. If Roblox is still showing the same crash error, the final solution that you can try is to update certain files in the installation folder.

Look for and open the Roblox folder. Select everything inside by pressing the Ctrl + A hotkeys and then Shift + Delete to permanently delete the selected content.

Then, enter roblox.com in the search box and then press the Delete icon present next to the Roblox website. Once done, clear the Roblox cache from the Temp folder using method (1).