789 is classically bad PSK, but it can also pop up when you’ve got a bad credential OR when Windows has changed the password protocol on you. If Windows 10, check out the scripts in my signature. Regardless of version, set Encryption to “optional”: Windows doesn’t support PAP with ‘required’ encryption.
In this scenario, the L2TP/IPsec VPN Virtual private network A virtual private network extends a private network across a public network, and enables users to send and receive data across shared or public networks as if their computing devices were directly connected to the private network. Applications running on a computing device, e.g. … en.wikipedia.org connection doesn’t work, and you receive a 789 error code that looks something like this: Error 789: The L2TP connection attempt failed because the security layer encountered a processing error during initial negotiations with the remote computer. Hotfix information
After ten Windows automatic updates KB5009543, the VPN client cannot connect to Meraki VPN and gives error 789. Microsoft maintains a version of the hotfix KB5010793, please download and install it. Restart your Windows 10 PC to fix this. Best wishes. Get notified when additional mentions appear in this thread.
According to your reports, VPN error 789 can appear on your Windows 7/8/10/11 PC if you disable critical services for offline VPN. To permanently fix the error, turn them back on. Step 1: Press +win R, enter services.msc in the field and press OK.
In this scenario, the primary L2TP/IPsec VPN connection is down, and as a result you get error code 789, which looks like this: Negotiations that are on the remote computer.
What Causes VPN Working Relationship Error 789? If you get an L2TP error 789, something is seriously wrong with your system. And not primarily with your VPN. The most obvious is that the operating system is not properly configured to connect to the L2TP server.
Which has failed the error code returned on failure is 789?
VPN error 789 is one of the most common errors that occurs when a user tries to verify that you are establishing an L2TP connection… Your current VPN server or client has the wrong certificate and preshared key set. The machine map or trusted machine root certificate is almost certainly missing from the VPN server.
Has failed the error code returned on failure is 789?
VPN error 789 is one of the most common errors that occurs when a new user tries to connect to L2TP.… An invalid certificate or pre-shared keypoint is defined on the web server or vpn client. The computer certificate or trusted root computer certificate is not displayed on the VPN server.