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Fix: VPN Connection User Authentication Failed Mac

The VPN Connection User Authentication Failed Mac issue is experienced by most of the Mac computer users while creating a new user account. Some of the possible ways to solve this issue are discussed below.

  • If the VPN connection user authentication failed issue has occurred while adding a new account, then navigate to your Mac computer’s Library section.
  • Select the Preferences option followed by System Configuration.
  • Now, you can find the list of files that hold important data about your network setting and the VPN connection.
  • Copy the new user or account folder and paste it to your current user account.
  • This method will resolve the VPN Connection user authentication failed error on the Mac device.
Vpn Connection User Authentication Failed Mac

Disable or turn on your Mac system’s firewall option

  • A firewall is used to scan each data that is sent from or received on your Mac computer.
  • Sometimes, your Mac computer’s firewall might be blocking the transmission.
  • To disable or turn off the firewall option, click the Apple menu.
  • Select the System Preferences option followed by Security & Privacy.
  • Now, the Security & Privacy window will open.
  • Click the Firewall tab.
  • Locate the Firewall: Off option and disable it by clicking the radio button next to it.
  • Now, your Mac computer’s firewall option is disabled.

Try connecting devices using an Ethernet cable

  • If you have connected the modem or router to your Mac computer wirelessly, then connect them directly using an Ethernet cable.
  • If you have connected one router behind the other, then there is a chance for the double NAT problem to occur.
  • In this situation, enable the bridge mode to help two routers to work together.

Change TCP or UDP protocol

  • Transmission Control Protocol (TCP) and User Datagram Protocol (UDP) are the two IP protocols used for connectivity.
  • Out of these, the TCP protocol is used across the internet. It also has an error correction feature. So if there is a connectivity problem, then TCP tries to solve it by itself.
  • UDP is faster when compared to TCP. But, it is not used as much as TCP.
  • To change the VPN protocol on your Mac computer, read and proceed with the guidelines given below.
  • Navigate to your Mac computer’s VPN settings section.
  • Locate your current server and click the cogwheel icon located beside it.
  • Choose the UDP or TCP option based on your preferences.
  • Click the Apply button.

Identify the number of devices connected

  • If the number of connected devices to your network is high, then there is a chance for the VPN connection user authentication failed issue to occur on your Mac computer.

Check your VPN

  • Make sure that your VPN connection is stable.
  • Some of the VPNs recommended for Mac computers are IPVanish, ExpressVPN, VyprVPN, and NordVPN.

To get remote assistance in solving the VPN Connection User Authentication Failed Mac issue, click the Call or Call Us button provided on this web page.

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