Error 429, which has an “Authentication Failed” message, occurs for some players when they try to play Roblox games. For example, one player described the gaming issue like this: “When I try to launch an experience from the (Roblox) website, 90% of the time it says error 429, and my settings won’t save anymore.” Players can’t access and play Roblox games when that error arises. This is how to fix the “Authentication Failed” Robox error 429 on a Windows PC.
Check the Roblox Server Status
Checking the Roblox server status may reveal there’s a general server-side issue causing the “Authentication Failed” Roblox error 429. Open this page to check the Roblox server status. If that shows there is a server-side issue, try waiting a day or two and then try playing Roblox again.
The Roblox server status page
Flush the DNS Cache
Flushing the DNS cache has worked for some players who’ve fixed the “Authentication Failed” Robox error 429. Applying this potential fix can resolve network issues by erasing temporary IP address records. You can execute a command for flushing the DNS cache as follows:
- First, activate the file finder utility by clicking the Windows search box or taskbar button.
- Enter the cmd search phrase to find the Command Prompt Windows app.
- Click Run as administrator for the Command Prompt app shown within the search utility.
- Enter ipconfig /flushdns and press Return to execute the flush DNS command.
The ipconfig /flushdns
Reset Your PC’s Network
If flushing the DNS cache doesn’t do the trick, try applying a more extensive network reset. A network reset reinstalls network adapters. These are the steps for applying a network reset:
- Open the search box in Windows.
- Enter the network reset keyword.
- Click on the Network reset search result to access that troubleshooting option.
- Press the Reset now button in Settings.
The Reset now button
- Select Yes when asked if you’re sure.
Connect to a VPN
Some players have confirmed that utilizing VPNs can fix the “Authentication Failed” Roblox error 429. Try downloading and installing a free VPN, such as Proton VPN and ExpressVPN. Then, try playing Roblox when connected to your VPN.
Clear the Logs Folder
Clearing the Logs folder is another confirmed way to fix the “Authentication Failed” Robox error 429 on a Windows PC. Applying this possible solution may clear corrupted data, causing error 429. These are the stops for clearing the Logs folder:
- Activate Run by pressing the Windows logo keyboard key and R simultaneously.
- Type %localappdata% into Run and click OK.
- Double-click the Roblox subfolder within the Local folder.
- Select all log files in that folder (press Ctrl + A).
The logs folder
- Click Explorer’s Delete option to erase what you’ve selected.
Other Possible Ways to Fix “Authentication Failed” Robox Error 429
If the “Authentication Failed” Robox error 429 persists, there are other troubleshooting methods that might resolve that gaming issue. Here are some other possible ways to fix Roblox error 429:
- Clear your web browser’s cache data.
- Disable all extensions added to your web browser.
- Change the DNS server on your PC to Google’s preferred address, 8.8.8.8, and an alternative address, 8.8.4.4.
- Try playing Roblox games with its Microsoft Store app rather than via a web browser.
Many players have fixed the “Authentication Failed” Roblox error 429 with the troubleshooting methods outlined above. So, maybe one of them will work for you, too. If not, consider sending a support ticket to Roblox’s help service by clicking Continue on this contact form page.
