13 Ways to Fix Roblox Error Code 403

Games like Roblox are one of the best places to explore your creativity. The ability to play infinite experiences inside Roblox without downloading anything else has helped the game garner a massive user base and community. However, the game being so popular doesn’t mean it’s immune to errors. If you see Roblox error code 403, this guide is for you.

When you see Roblox authentication error 403 on your screen, your account has been banned from the game. This can be either because you are violating any rules and policies or because of some error from Roblox’s side. Let’s see if we can fix the issue regardless of the reasons.

1. Check Internet Stability

Usually, when you see “an error was encountered during authentication” on Roblox, it might not mean you are banned from the game. This can also occur if Roblox is having difficulty verifying you. This can occur because of an unstable or slow internet connection. It’s best to check your internet speed.

You can check the internet speed using the link below. This is just one popular tool. You can always use any other tool for the same.

Check Internet speed

If you find that your internet speed is low, you can take the following measures to fix it:

• Restart your modem and router: Everything needs a rest. Even your modem and router need one. It’s best to restart your modem or router once in a while. This will refresh your connection and clear any temporary problems to ensure stable internet speeds. We would suggest restarting your modem at least twice a week.
• Update your internet plan: Games like Roblox require a strong internet connection. If you have a slow connection, upgrade to a better plan.

• Change ISP: If upgrading the plan doesn’t improve your internet speeds, it’s best to change your ISP.
• Reset network settings: Despite ensuring that your Wi-Fi is working without any issues, it can be because of some issues with your device. You can always reset the network settings on iPhone and Android. PC users can also reset the network settings and check if that helps.

2. Change DNS on Windows

Despite having a good connection from a good ISP, you might still face Roblox Error Code 403 because of the internet stability. You can switch to another popular DNS and see if you still face the issues. We have a detailed guide on how to change DNS on Windows. Follow that and let us know if it works.

3. Check if Roblox Is Down

Now that you have ensured a stable internet connection but still see an authentication failed message, it might be because Roblox is down. You can check that by using the link below:

Check if Roblox is down

If it shows that Roblox is having issues, it’s best to wait until it is fixed. Depending on the issue, the time frame might vary.

4. Disable VPN

If you are using any VPN while playing Roblox, you might see error code 403 after getting banned, as it might be considered cheating. If not, VPNs can also reduce the internet speeds, preventing Roblox from verifying you properly.

Hence, disable the VPN and check if you still see the error message in Roblox.

5. Disable Windows Defender or Antivirus

Windows Defender protects your PC from suspicious files and programs that can cause issues to your system. However, this can also confuse and prevent several programs from working properly. This might have happened with Roblox, too. Hence, disable Windows Defender and then run Roblox:

Step 1: Open Settings and navigate to ‘Privacy & security’ settings.

Step 2: Choose Windows Security under Security. If you see any other applications in place of Windows Defender, open that antivirus application to disable it.

Step 3: Select ‘Virus & threat protection.’

Step 4: Click Manage settings.

Step 4: Toggle off ‘Real-time protection.’ If prompted, click Yes.

Tip: You can also turn off other options on the same page.

That’s it. You have disabled Windows Defender on your Windows PC temporarily. You can follow the same steps to enable them again. Once you disable Windows Defender, check if Roblox still shows the error message.

6. Add Roblox to Your Firewall’s Whitelist

Besides disabling Windows Defender, there is also Windows Firewall, which prevents suspicious apps from accessing the internet. If it has blocked Roblox from accessing the internet, you might see “an error was encountered during authentication”. You can let Firewall know that the app is safe. Here are the steps to follow:

Step 1: Open Windows Security using Start or Search.

Step 2: Select ‘Firewall & Network Protection’ and choose ‘Allow an App Through Firewall.’

Step 3: Choose Change Settings and choose the app you want to allow.

Step 4: After making the necessary changes, click OK.

7. Restart System

Restarting your device can help fix Roblox error code 403. Restarting your system will clear all the cache files, including the ones causing any issues. We already have a detailed guide on how to restart a Windows system. As for other devices, you can follow the steps mentioned below:

Restart Mac

Step 1: Click the Apple icon at the top right corner.

Step 2: Click Restart. Choose Restart again to confirm.

Restart iPhone

Depending on the iPhone you use, the steps to restart them might vary. You can follow the steps mentioned here based on your iPhone (Face ID vs Touch ID).

Step 1: Turn off your device by following the below steps:

• For iPhone SE 1st gen, and 5 series: Long-press the top button.
• For iPhone 6 series and later with home button: Long-press the side button.
• For iPhone X and later with Face ID: Long-press the power and any volume buttons simultaneously.

Step 2: When a slider appears, drag it till the end to shut down.

Step 3: Once done, long-press the power button until the Apple logo appears.

Restart Android

Depending on the Android Devices, the steps may vary.

Step 1: Invoke the power menu and follow the steps that work for your device:

• Press and hold the power button. If it invokes Google Assistant, you need to follow the next method.
• Press and hold the power and Volume up/down buttons simultaneously.

Step 2: Choose Restart and tap Restart again to confirm.

8. Log Out and Log in to Roblox

When you log out from Roblox, it will also clear out any temporary files associated with it. Hence, you can give it a shot:

Step 1: Open Roblox and click the More option from the sidebar. The option is at the bottom right corner of the Roblox app on Smartphones.

Step 2: Scroll down and click Log out. When asked, click Log Out again to confirm.

Once you log out, enter your credentials and tap login.

9. Remove Roblox cache on Windows and Android

Like every application, Roblox stores a cache to load certain features faster. However, these cache files can corrupt over time and cause issues such as Roblox authentication error 403. The solution, in this case, is to clear the cache. You can only do it on Windows and Android. Here are the steps to follow:

On Windows

Step 1: Open the Run application using Start or the Windows + R key.

Step 2: Type the following and hit OK.

%localappdata%

Step 3: Search and open the Roblox folder and delete the contents inside the folder.

On Android

The steps and option names differ based on the device you use. However, these steps will still give you an idea of what to do.

Step 1: Tap and hold the Roblox icon from the home screen or app drawer. After that, tap the App icon.

Step 2: Choose ‘Storage & cache.’

Step 3: Tap Clear cache.

10. Run an SFC and DISM Scan on Windows

If you see Error code 403 on Roblox for Windows, try running an SFC (System File Checker) scan. This built-in tool in Windows can scan your system for missing or corrupted files and fix them if necessary.

Step 1: Open Start and search for Command Prompt. From the results, click ‘Run as administrator.’ Click Yes to confirm.

Step 2: Next, type the following and press Enter.

sfc /scannow

Wait until the process is finished, and then Restart your system. If the authentication fails again on Roblox, you can also run a DISM scan. For that, run Command Prompt as administrator and type and enter the following commands:

DISM /Online /Cleanup-Image /ScanHealth
Dism.exe /online /cleanup-image /restorehealth

Also Read: How to run programs as administrator in Windows 11

11. Make the Registry Edit on Windows

Roblox also might be lacking some permissions to work properly. Hence, the reason you see Roblox authentication error 403. Here’s how you can give all the necessary permissions using Registry Edit:

Step 1: Open regedit using Start of Search. Click yes to give permission.

Step 2: Right-click HKEY_CURRENT_USER folder and choose Permissions.

Step 3: Choose Full Control and click Apply. Once you make the changes, click OK to confirm.

Repeat the same for the HKEY_LOCAL_MACHINE_SOFTWARE folder.

12. Reinstall Roblox

Besides the fixes mentioned, you can also reinstall Roblox. Uninstalling and reinstalling the application will clear the app data, including those causing “an error was encountered during authentication” on Roblox. You can follow our detailed guide to uninstall an app on Window, Mac, or iPhone to remove Roblox.

As for Android users, follow these steps:

Step 1: Open the Roblox page on Play Store and then tap Uninstall.

Step 2: Tap Uninstall to confirm.

Once you uninstall the app, you can install Roblox using the link based on your device.

Install Roblox

13. Contact Roblox Support

If you still see the Roblox error code 403 after getting banned, we suggest contacting Roblox to request help. You can open Roblox support using the link below:

Contact Roblox Support

Enter the required information, such as contact info and device info. After that, mention the issue you are facing. Once you have added all the required information, click Submit. Upon receiving the request, Roblox will contact you with the possible resolution.

Keep Playing

Now that you know how to fix Roblox error code 403, we hope you succeed. Remember not to violate any of Roblox’s rules and policies to get banned. Do let us know if you still have any queries or suggestions.