How to Fix Error code 403 in Roblox – Authentication Failed Error

 How to Fix Error code 403 in Roblox – Authentication Failed Error

Roblox is a very popular and widely played gaming platform available across many platforms such as PC, Mac, Xbox, and Fire OS. It has become popular especially among young and teenage gamers as Roblox offers several unique game modes. One of the best things about Roblox is that it features a game creation system where users can program their own games and play some interesting games created by other users. However, this platform is quite complex and so it has several bugs and issues including lag and performance issues, error code 273, disconnected from the server, and a few others. One of the common errors reported by many players is error code 403 – Authentication failed error. In this guide, we will check what are the main reasons behind this error and how you can fix it with some quick solutions.

Fix Error code 403 in Roblox – Authentication Failed Error

There could be multiple reasons why you are experiencing error code 403 in Roblox such as corrupted game files, interference of third-party security software, IP banned, VPN installed on your device, etc. In this guide, you will find several potential steps that should help you to fix error code 403 – Authentication failed error.

1. The very first solution we recommend is to fix corrupted system files. For this:

– Open up Command Prompt as administrator

– Use the (sfc /scannow) command and then press Enter.

– Reboot your system

– If you see an error, then use the following commands and press Enter after each of them.

DISM /Online /Cleanup-Image /CheckHealth

 DISM /Online /Cleanup-Image /ScanHealth

 DISM /Online /Cleanup-Image /RestoreHealth

2. This type of issue can be fixed by cleaning up or eliminating trash files. So, here are the steps to erase app data

– Open up the Run dialogue box by pressing Win + R keys on your keyboard

– In the textbox, type %localappdata% and press enter.

– Go to the Local app data folder >> Roblox folder

– And remove all files in that folder

– Once done, relaunch the Roblox and you are good to go

3. Some players suggest on Reddit that the error 403 triggers when your IP is banned on any one account and you are attempting to access Roblox using a different account. However, the good news is, it is not a full “IP ban” but it is more of a browser ban. So, in the case of your account ban, try using a different browser and you will not face error 403 in Roblox.

4. At times, your antivirus software and/or VPN service can blog the process and prevent the Roblox from running smoothly. If that is the case, try disabling your antivirus program or VPN service and then try to launch Roblox. 

5. Removing entries from the Registry Editor should be your next move to fix error code 403 in Roblox. To do that:

– Open up the Run dialogue box by pressing Win + R keys on your keyboard

– Type regedit and then hit Enter


– Next, select Permissions from the dropdown and give full control to the user

– Then click on Ok and close that editor

– Reboot your PC and relaunch Roblox and the error code 403 should be eliminated

6. The last option is to uninstall the Roblox completely and then reinstall it.

That’s all potential solutions we have covered in this guide to fix error code 403 in Roblox.

Also learn – How to fix lag and performance issues in Roblox.

Prasiddh Thakkar

I am a trainee at QM Games.

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