Hi, UltraB22_
Welcome to Microsoft Community.
We understand that you have a problem installing Roblox Studio. Please try the following steps:Open Task Manager (press Ctrl+Shift+Esc), find all Roblox processes, right-click them one by one and select "End Task". Then, press Windows +R to open the running program Windows, and then copy and paste the following: %localappdata% and press Enter. Find the Roblox folder and delete its contents.Next, please download the installer again and run it. In the search bar, search for Roblox Studio, right-click it and select the location to open the file. Open the folder and look for "RobloxPlayerLauncher" in the subfolder. Run RobloxPlayerLauncher.See if we can solve the problem.If the above steps can't solve the problem, you can try the following scheme:I. Reset network settingsClick the windows+R key, enter inetcpl.cpl, open Internet options, click Advanced, and check "Use SSL 3.0", "Use TLS 1.0", "Use TLS 1.1" and "Use TLS 1.2", and restart the computer after application to see if the problem can be solved.II. Rename the Roblox folderGo to the %appdata%-Local path and rename the Roblox folder, and then try to install it again. At this time, a new Roblox folder will be created, and your installation should be completed successfully.III. create a new local accountSearch for CMD, then run in administrator mode and enter the following commandnet user USERNAME PASSWORD /addnet localgroup administrators USERNAME /addUSERNAME PASSWORD can be replaced with the account name and PASSWORD you want, and password can be omitted if no password is needed.If there is no problem under the new account, it should be a failure of the account configuration file. Please refer to the scheme under repairing the damaged configuration file in the following article to transfer your data to the new account.* Troubleshoot problems signing in to Windows - Microsoft Support * (The operation steps of *(Windows 11 and Windows 10 are the same, so you can directly refer to the scheme of Windows 10 and implement it. )If you still encounter this problem after trying all the above schemes, there may be a problem with the Roblox download server, so I suggest you contact the official support of Roblox directly.If you have any progress, please feel free to contact us.
Best Regards
Nicholas.Z - MSFT | Microsoft Community Support Specialist