OpenVPN Support Forum

Posted: **Fri Sep 18, 2015 1:13 pm**

Hello,

I have searched everywhere for a solution but I couldn't find one.

I am running Windows 8.1 x64 with the following configuration:

server.cfg ->

Code: Select all

dev-node TUN-adapter

adapter name

and

however when I try starting the server I get the following error:

Code: Select all

Fri Sep 18 16:11:21 2015 Diffie-Hellman initialized with 1024 bit key
Fri Sep 18 16:11:21 2015 Socket Buffers: R=[65536->65536] S=[65536->65536]
Fri Sep 18 16:11:21 2015 do_ifconfig, tt->ipv6=0, tt->did_ifconfig_ipv6_setup=0
Fri Sep 18 16:11:21 2015 MANAGEMENT: >STATE:1442581881,ASSIGN_IP,,10.0.0.1,
Fri Sep 18 16:11:21 2015 open_tun, tt->ipv6=0
Fri Sep 18 16:11:21 2015 MANAGEMENT: Client disconnected
Fri Sep 18 16:11:21 2015 TAP-Windows adapter 'TUN-adapter' not found
Fri Sep 18 16:11:21 2015 Exiting due to fatal error

Please help.

Thank you in advance,

Nick

Posted: **Mon Sep 21, 2015 10:18 am**

This is a new problem for which I cannot provide an answer.

Here is the TAP trouble shooting docs:
ManagingWindowsTAPDrivers

My first thought would be to reinstall the TAP driver using "Windows Menu > TAP Windows > Utilities"

Hopefully you can find a solution and let us know ..

Posted: **Wed Feb 22, 2017 9:08 am**

This issue appears when you installing adapter using standard Windows drivers menu and adding "Legacy Network Adapter" using TAP drivers.

You must uninstall adapter using drivers menu and use OVPN utility. By default it is there :

"C:\ProgramData\Microsoft\Windows\Start Menu\Programs\TAP-Windows\Utilities\Add a new TAP virtual ethernet adapter"

Don't forget to choose "Run as Administrator", otherwise it will produces error.

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