Experiencing the authentication error on your FFXIV? Perhaps you’re trying to log in the game but get disconnected and see the error “An authentication error has occurred” with the error code 5003. This in fact has happened to a lot of FFXIV players.

But don’t worry! In this article, we will give you an extensive list of possible fixes for this issue, and each of them will be explained in a detailed and clear way. We hope that by following these fixes, you’re able to fix your FFXIV authentication error easily!

Restart your computer and router/modem

To fix your FFXIV authentication error, one way you can try is to clear your router/modem cache. To do that you need to restart them:

Step 1: Turn off your device.

Step 2: Turn off your router and modem and disconnect them from the power source.

Step 3: Leave them for several minutes.

Step 4: Reconnect all these devices to power, and turn them back on.

Step 5: Launch your FFXIV and test to see if this fixes your FFXIV authentication error.

Try a different network connection method

This is an effective way to fix your FFXIV authentication error. To use a different connection method:

Step 1: If you’re using a wired connection, try connecting to your network wirelessly, or vice versa. Then test your issue.

Step 2: Or try turning on the mobile hotspot feature on your smart phone, and connect your computer to that network.

Once you’ve done any of them, test to see if this resolves your FFXIV authentication error problem.

Reset your Windows network settings

It’s possible that the cause of your FFXIV authentication error problem is on your Windows IP and DNS settings. You can try resetting them and see if this works.

Step 1: Press and the Win and R keys on your keyboard to launch the Run box.

Step 2: Type “cmd” and press CtrlShift and Enter on your keyboard. This will run Command Prompt as Adminstrator.

Step 3: In Command Prompt, enter the following commands:

ipconfig /flushdns
ipconfig /renew
ipconfig /registerdns

Step 4: Close the window and restart your computer. Then test your FFXIV authentication error issue.

Use a VPN

Your FFXIV authentication error may result from some interruptions to your FFXIV connection. And connecting through a VPN can help you get around them.

Setting up a VPN usually requires some time and computer skills. If you want an easier option, you should try a VPN service. And we recommend using NordVPN.

NordVPN is an easy-to-use and fast VPN service. You’ll be able to set up a VPN connection with just a few mouse-clicks. And its fast speed servers at multiple locations offers you a comfortable and reliable experience.

To use NordVPN on your computer:

Step 1: Download and install NordVPN on your computer.

Step 2: Run NordVPN and sign in your account.

Step 3: Click the Connect switch. This will automatically connect you to the VPN server recommended for your device.

Now your VPN connection is set up, and you can see if this works to fix your FFXIV authentication error.

Has any of the fixes above worked for you? Or do you have any other effective ways to fix the FFXIV authentication error? Tell us by leaving a comment below!

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