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.

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.

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.

Delete the Roblox folder from your AppData folder. Open a folder and access your C: drive. Go into Users > Your name. At the top, click View and make sure ‘Hidden Items’ is checked.

Now, select the Local folder and find the Roblox folder inside Click once on the Roblox folder, making sure not to open it, and press “Shift + Delete” ...

Roblox error code 403 is caused by an authentication error. Here's how to fix Roblox error code 403 once and for all.

Uninstall Roblox. Open your File Explorer and type %LocalAppData% into the address bar. This will take you to a hidden folder where applications store data. Find the “Roblox” folder and delete it.

Click Win+R to open the Run dialogue box. Now type in Appdata, hit the Enter button, and then go to the Local Folder. Delete the Roblox folder and relaunch Roblox.