"Couldn't allocate any server ip port"

[Dewd]

Hello,

I have a TF2 Dedicated server running and I would like to join it to administrate it.

But everytime I try to join via internal ip or external ip, it crashes with the message

TF2 Wrote:Couldn't allocate any server ip port

The server is on the same machine as I am trying to play on.

The launching parameters are:

Code:

-console -game tf +map ctf_2fort +sv_lan 0 +heartbeat

I have put that in the launch options of the "Team Fortress 2 Dedicated Server" tool, so I don't have to download everything for it, is this related to my problem?

Thank you for any help,

Dewd