All ovpn-dco adapters on this system are in use or disabled

[s-a-m-u-e-l]

OpenVpn GUI uses DCO Data Channel Offload network drives.
Per connection it needs one dco.

To recreate the error uninstall all VPNs on your computer or use a clean VM then try to connect to multiple vpns that use dco
Error Message:

It maybe never is an issue if you have multiple VPNs installed like OpenVPN GUI and OpenVPN Connect and/or NordVPN

In my case i had NordVPN installed and because of this it was never an issue to have multiple connections because the seccond connection used the DCO from NordVPN

But when you only have OpenVPN GUI installed and want to connect two vpn's you need a seccond DCO
There is a weird workaround you can disable the DCO and connect your first VPN, then you enable it again and connect the seccond one. This works because it does not use the DCO then but uses the TAP-Adapter

To create a seccond dco you need to run following command:
"C:\Program Files\OpenVPN\bin\tapctl.exe" create --hwid ovpn-dco --name "Local Area Connection#2"

https://www.internet-xs.de/kb/openvpn-allgemein/openvpn-auf-windows-all-tap-windows6-adapters-on-this-system-are-currently-in-use-or-disabled-57296

https://forums.openvpn.net/viewtopic.php?t=35320

to delete it:
"C:\Program Files\OpenVPN\bin\tapctl.exe" delete "Local Area Connection#2"

• It would be very nice if openvpn automatically creates new adapters if you have multiple connections!