Description: If you see the below error on your logs:
POST np://[\\.\pipe\agent_ovpnconnect]/tun-setup : 400 Bad Request
Open TAP device "" PATH="" FAILED
Destroyed previous TAP instance due to exception
cannot acquire TAP handle
Cause: This means an issue with the TAP adapter driver. This indicates that there is something that prevents installing the network adapter required for VPN operation or something blocking it on your system.
Most likely culprits are other VPN software like Cisco AnyConnect or Avast SecureLine, or an antivirus program that blocks the installation of drivers.
Resolution: If you have this type of software, kindly disable it and try reinstalling the client application.
Access Server Resources:
OpenVPN Access Server Documentation
OpenVPN Access Server Resource Center
OpenVPN Access Server Admin Manual
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