Fixing VPN Connection User Authentication Failed Mac

The VPN Connection User Authentication Failed Mac issue is being experienced by many Mac computer users while creating a new user account. However, there are someways to resolve this issue, and they are discussed below.

● If the VPN connection user authentication failed issue occurs while adding a new account, then navigate to your Mac computer’s Library section.

● Select the Preferences option.

● Click on System Configuration.

● Here, 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 into your current user account.

● This method will resolve the VPN connection user authentication failed error on your Mac device.

Disable Or Turn O 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. Therefore, you need to turn o the firewall. Follow the instructions given below to do the same:

● On your Mac, click the Apple menu.

● Select the System Preferences option followed by Security & Privacy.

● Now, the Security & Privacy window will open. Here, click the Firewall tab.

● Locate the Firewall: On option and disable it by clicking the radio button beside it.

● Just follow the rest of the on-screen instructions to finish turning o the firewall.

● Now, your Mac computer’s firewall option is disabled.

Try connecting devices using an Ethernet cable.

Connect Your Devices By Utilizing An Ethernet Cable

● If you have connected your modem or router to your Mac computer wirelessly, then disconnect and connect these devices directly using an Ethernet cable.

● In case you have connected one router behind the other, then there is a chance for the double NAT problem to occur. In such a situation, enable the bridge mode to help two routers to work together.

Identify The Number Of Devices Connected

● If the number of devices connected to your network is high, there’s a chance for the VPN Connection User Authentication Failed Mac issue to pop up on your Mac.

● To rectify this problem, make sure that you check the number of devices on your network. If you find too many devices, disconnect them from the network and retain only a limited number.

Check Your VPN Connection

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

Change The 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.

● Finally, click the Apply button.