

Make sure you are using your OpenVPN credentials ( and not your Proton credentials). Verify that you’re using correct OpenVPN credentials

Please try the following steps to fix the problem:ġ. If you encounter this error, there are a number of things you can try to remedy this situation. Quick steps to fix an Authentication Failure error For more details, check out the different Proton VPN Plans. Free users get 1 connection, while Proton Plus users get up to ten connections. Different plans have different maximum number of simultaneous sessions.

This error message is thrown by the OpenVPN protocol and can mean one of two things: Auth Failed on Linux – Ubuntu command line
