All TAP-Win32 adapters on this system are currently in use

jinx

I am trying to establish openvpn connection from the Windows Server 2008 R2 SP1 64b machine. I tried a few different versions of openvpn client (including the newest one - openvpn-install-2.3.2-I003-x86_64.exe) and still no success. I am getting the following error: "All TAP-Win32 adapters on this system are currently in use".

OpenVPN was installed and run as Administrator, I tried to remove/add TAP adapter, tried to set compatibility mode to Windows Vista, no progress ;/

Has anyone ever come across a simillar problem?

Thanks in advance,
Gabriel

sofo

Error message indicates your TUN TAP adapter in use by other program or already by openvpn.exe.
Go to Control panel and see Status of TUN TAP Adapter.
Check Taskmanager if unwanted openvpn.exe already running . If yes you need to kill it.

It happens when openvpn.exe invokes multiple time when you are using any UI mainly ..or in last connection openvpn.exe not exited yet.

You can check if this is your case.

Thanks