Issue: How to fix Authentication Failed: error code 403 in Roblox?
Hello. I try to play Roblox but I received Authentication Failed: error code 403. How do I resolve this?
An online game platform and game creation system Roblox allows users to program games and play games created by other users. It is free to play, with in-game purchases available through a virtual currency called Robux. As of August 2020, Roblox had over 164 million monthly active users.
Unfortunately, sometimes users run into issues when trying to play their favorite game. We previously wrote about numerous other Roblox errors, like 268, 277, or 267. Now, people report seeing the message “Authentication Failed: error code 403.” Such an error can appear for various reasons. First, you should check if there are no problems with Roblox servers. You can do that by visiting the Roblox status page.
If there are no active incidents, you should look for the problem in your system. Other common reasons for issues causing games to not launch includes corrupted game files or wrong registry entries. That is why you should try to reinstall the affected application. Error code 403 in Roblox may also appear because of third-party security software or VPN on your device.
In this guide, you will find 5 steps that should help you fix Authentication Failed: error code 403. Sometimes manual troubleshooting can be a lengthy process. To avoid it, you can try using a maintenance tool like ReimageMac Washing Machine X9. It can fix most system errors, BSODs, corrupted files, registry issues, and even clear your system from cookies and cache. Otherwise, follow the step-by-step instructions below.
Method 1. Reinstall Roblox
- Open Windows Settings and click on Apps
- Go to the Apps & features tab
- Locate Roblox in the list, and click on it
- Click on the Uninstall button
- Click on OK to confirm your deletion and give all the necessary permissions
- Wait till the uninstallation finishes
- Download Roblox and install it again
Method 2. Delete the Roblox Folder in AppData
- Press the Windows key + R to launch the Run prompt
- Type %localappdata%, and hit Enter
- A folder containing local data will open in File Explorer
- Locate the Roblox folder and delete it
- Reinstall the Roblox application on your computer
Method 3. Fix Corrupted System Files
Use Command Prompt commands to repair system file corruption:
- Open Command Prompt as administrator
- Use the following command and press Enter:
- Reboot your system
- If SFC returned an error, then use the following command lines, pressing Enter after each:
DISM /Online /Cleanup-Image /CheckHealth
DISM /Online /Cleanup-Image /ScanHealth
DISM /Online /Cleanup-Image /RestoreHealth
Method 4. Disable Third-Party Antivirus and VPN
Sometimes antivirus software can block legitimate processes mistakenly. You should try disabling your antivirus and trying to launch Roblox again. Additionally, if you are actively using a VPN, it may also be causing the error code 403 to appear. Turn it off and see if it resolves the problem.
Method 5. Delete Entries from Registry Editor
- Open the Run box by pressing the Windows key + R
- Type regedit and hit Enter
- Right-click on HKEY_CURRENT_USER and HKEY_LOCAL_MACHINE SOFTWARE separately. A dropdown will appear
- Choose Permissions from the dropdown and give full control to the user
- Click on OK, and close the editor
- Restart your computer and reopen Roblox
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