How to Fix NordVPN Authentication Error

NordVPN is one of the best online VPN services with good speed and encrypted internet connection. It hides your IP, blocks ads, and keeps you safe online with its VPN proxy extension for Chrome. But what happens when you face a NordVPN Authentication error?

NordVPN is super fast, packed with secure internet and can be easily used on your devices. However, getting the NordVPN Authentication error message can be quite frustrating.

You cannot access your VPN account and secure your devices due to this error. However, there is no need to worry as it is easy to fix. In this post, we have shared steps to troubleshoot the error and get the VPN to work smoothly again.

NordVPN Authentication Error-Fixes

 NordVPN Logo

Reboot Your Device


One of the simplest and easiest solutions to NordVPN Authentication Error is to reboot your device. Rebooting clears the device of cache and bugs and allows the VPN to start fresh.

Whitelist NordVPN on Firewall

Windows Firewall may see the files associated with NordVPN as a threat. Therefore they will block the NordVPN connection attempts. To solve this issue one needs to whitelist NordVPN on Firewall.

  • Disable Windows Firewall by clicking on Start and then on Settings.
  • Tap on Update & Security.
  • Tap on Windows Security and go to Firewall & Network Protection.
  • Disable Microsoft Defender Firewall.
  • You will need to add the following file exceptions to ensure your firewall whitelists them:
  • %ProgramFiles% (x86)\NordVPN\NordVPN.exe
  • %ProgramFiles% (x86)\NordVPN\nordvpn-service.exe
  • %ProgramFiles% (x86)\NordVPN\Resources\Binaries\64bit\openvpn-nordvpn.exe
  • %ProgramFiles% (x86)\NordVPN\Resources\Binaries\32bit\openvpn-nordvpn.exe
  • After adding the exceptions, launch the VPN client to check if the issue is resolved.

Uninstall/Reinstall the NordVPN Application

NordVPN App

A corrupt installation of your VPN can cause a NordVPN Authentication Error. To resolve the error try uninstalling and reinstalling your VPN client.

  • On Windows, click on Start, go to Settings and select apps.
  • Scroll to the NordVPN entry and tap on Uninstall.
  • Tap on Uninstall to confirm.
  • NordVPN will be uninstalled from your device.
  • Download the NordVPN Windows installer and click the downloaded file.
  • Open the setup and follow the installation prompts.
  • As soon as the installation is complete try logging in to NordVPN to see if your issue is now resolved.

Check Login Details

Your login details may also be the reason behind the NordVPN Authentication Error. Check your login details as you may have typed incorrect spelling or password.

Be careful when using upper- and lowercase letters to avoid login issues. Also, check if your NordVPN service is still active and not expired.

Try NordVPN Alternatives

If none of the above solutions solve the NordVPN Authentication Error then do try some NordVPN Alternatives. We have listed a couple below.

ExpressVPN is one of the alternatives that provides users with a vast selection of server locations and your information is never recorded or shared.

Another is the Surfshark, one of the most affordable NordVPN alternative

The NordVPN Authentication Error can easily be resolved with the steps mentioned in this article. We hope this guide has been helpful and the error has been resolved.

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