Having problem with installing SoftEther in Ubuntu

I can’t connect start SoftEther in my Ubuntu (error: can’t reach the destination address).

Anybody knows why?

It’s very unclear what you are trying to do.

Are you trying to make an OpenVPN connection? If so, then the best practice is to use openvpn directly (instead of using Network Manager).

sudo openvpn --config xxx.ovpn

If you are trying to make a sstp connection to a Softether sstp-server, that is a little more complicated but once set up works fine.

No, not OpenVPN. I am talking about SoftEther.

SoftEther VPN (“SoftEther” means “Software Ethernet”) is one of the world’s most powerful and easy-to-use multi-protocol VPN software. It runs on Windows, Linux, Mac, FreeBSD and Solaris.

Yes, I am talking about SoftEther too. What are you trying to connect to?

Saying ‘it does not work’ does not provide any information.

Are you trying to use sstp or L2TP/IPsec if you are not using the OpenVPN part of Softether.

SoftEther is not SSTP, L2TP/IPsec.
I have problem at the connection step. The command is:
VPN Client>accountconnect myvpn

After this command I get this error:
can’t reach the destination address

And sometimes I get: could not establish connection

SoftEther is not SSTP, L2TP/IPsec.

It seems you have never set up a Softether server.

Yes, you are trying to make a sstp-connection setup.

This script could help you to make the config in your vpnclient, make the connection to the Softether server and to do the routing once the connection has been made:

https://github.com/ceremcem/softether-howto

I am a client, not server

It seems that reading documentation is not your strong point.