same issue as original poster I have tried disabling all firewalls and port forward 27000, 27003, 27020-27021
Also tried updating to beta version.
Purchased yesterday I have never actually gotten into a game.
2017-11-25 21-37-55| Client started: "C:\Program Files (x86)\Steam\steamapps\common\Avorion\bin\Avorion.exe" "--serverpath=bin/AvorionServer.exe"
2017-11-25 21-37-55| Enabled Traces:
2017-11-25 21-37-55| Client Beta 0.15.1 r9989, running on Windows 8.1+.
2017-11-25 21-37-55| CPU: GenuineIntel 12 Cores
2017-11-25 21-37-55| RAM: 16GB
2017-11-25 21-37-55| Init Steamworks...Installed Steam exception handler
2017-11-25 21-37-55| Init Steamworks... ok
2017-11-25 21-37-55| Init Steamworks ok
2017-11-25 21-37-55| Init SDL2... ok
2017-11-25 21-37-55| SDL version (compiled): 2.0.3
2017-11-25 21-37-55| SDL version (linked): 2.0.3
2017-11-25 21-37-55| Getting display mode... ok
2017-11-25 21-37-55| Current display mode: 1920 x 1080
2017-11-25 21-37-55| Creating settings... loading... setting language... ok
2017-11-25 21-37-55| Creating client window...Creating window ...
2017-11-25 21-37-55| Detected 2 displays
2017-11-25 21-37-55| Display 0: x: 0, y: 0, w: 1920, h: 1080
2017-11-25 21-37-55| Display 1: x: 1920, y: 0, w: 1920, h: 1080
2017-11-25 21-37-55| Using display 0
2017-11-25 21-37-55| Trying to create OpenGL 4.0 core window ...
2017-11-25 21-37-55| Creating window, x: 0, y: 0, w: 1920, h: 1080... ok
2017-11-25 21-37-56| Creating GL context... ok
2017-11-25 21-37-56| Setting display mode 1920 x 1080 (FullScreen)... ok
2017-11-25 21-37-56| GetDrawableSize: 1920 1080
2017-11-25 21-37-56| GetWindowSize: 1920 1080
2017-11-25 21-37-56| Creating client window ok
2017-11-25 21-37-56| Init rendering... starting rendering... initialize...Init GLEW... ok
2017-11-25 21-37-56| OpenGL Context Information:
2017-11-25 21-37-56| Version: 4.0
2017-11-25 21-37-56| VersionString: 4.0.0 NVIDIA 388.31
2017-11-25 21-37-56| Vendor: NVIDIA Corporation
2017-11-25 21-37-56| Renderer: GeForce GTX 970/PCIe/SSE2
2017-11-25 21-37-56| GLSL Version: 4.00 NVIDIA via Cg compiler
2017-11-25 21-37-56| GL_MAX_CUBE_MAP_TEXTURE_SIZE: 16384
2017-11-25 21-37-56| GL_MAX_ELEMENTS_INDICES: 1048576
2017-11-25 21-37-56| GL_MAX_ELEMENTS_VERTICES: 1048576
2017-11-25 21-37-56| GL_MAX_RENDERBUFFER_SIZE: 16384
2017-11-25 21-37-56| GL_MAX_TEXTURE_SIZE: 16384
2017-11-25 21-37-56| GL_MAX_VERTEX_ATTRIBS: 16
2017-11-25 21-37-56| GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS: 32
2017-11-25 21-37-56| Init Debug Message Callback... ok
2017-11-25 21-37-56| Set VSync... ok
2017-11-25 21-37-56| Secure BackBuffer... ok
2017-11-25 21-37-56| Init Canvas...Create canvas of size 1920 x 1080... ok
2017-11-25 21-37-56| Init Canvas ok
2017-11-25 21-37-56| Init Refraction Texture... ok
2017-11-25 21-37-56| Init Post Processing... ok
2017-11-25 21-37-56| Init Debug Renderers... ok
2017-11-25 21-37-56| DepthTexturesSupported: yes
2017-11-25 21-37-56| IntVertexAttributesSupported: yes
2017-11-25 21-37-56| DeferredSupported: yes
2017-11-25 21-37-56| LowSpecGPUDetected: no
2017-11-25 21-37-56| Available video memory: 3.56641 GB
2017-11-25 21-37-56| Rendering initialized
2017-11-25 21-37-56| Init rendering ok
2017-11-25 21-37-56| Check problematic drivers... ok
2017-11-25 21-37-56| Init shader level... ok
2017-11-25 21-37-56| Init loading screen... ok
2017-11-25 21-37-56| Draw first loading screen... draw... ok
2017-11-25 21-37-56| Init SFX... ok
2017-11-25 21-37-56| Init Input... ok
2017-11-25 21-37-56| Init GameInput... ok
2017-11-25 21-37-56| Init WorkerPool... ok
2017-11-25 21-37-56| Init Main Menu... ok
2017-11-25 21-37-57| Init Music... ok
2017-11-25 21-37-57| Apply loaded settings... ok
2017-11-25 21-37-57| Adjust settings to GPU... ok
2017-11-25 21-37-57| Client initialized
2017-11-25 21-37-57| Received stats and achievements from Steam
2017-11-25 21-37-57| STAT_PIRATES_DESTROYED: 0i
2017-11-25 21-37-57| STAT_XSOTAN_DESTROYED: 0i
2017-11-25 21-37-57| STAT_CIVIL_SHIPS_DESTROYED: 0i
2017-11-25 21-37-57| STAT_SHIPS_DESTROYED: 0i
2017-11-25 21-37-57| STAT_STATIONS_DESTROYED: 0i
2017-11-25 21-37-57| STAT_RESOURCES_MINED: 0i
2017-11-25 21-37-57| STAT_GOODS_TRADED: 0i
2017-11-25 21-37-57| STAT_GOODS_SOLD: 0i
2017-11-25 21-37-57| STAT_GOODS_BOUGHT: 0i
2017-11-25 21-37-57| STAT_GATES_USED: 0i
2017-11-25 21-37-57| STAT_WORMHOLES_USED: 0i
2017-11-25 21-37-57| STAT_JUMPS_USED: 0i
2017-11-25 21-37-57| STAT_SECTORS_DISCOVERED: 0i
2017-11-25 21-37-57| STAT_SECTORS_TRAVELED: 0f
2017-11-25 21-37-57| STAT_METERS_FLOWN: 0i
2017-11-25 21-37-58| Startup successful.
2017-11-25 21-38-02| Starting server 'bin/AvorionServer.exe' with arguments '--galaxy-name test1 --server-name Gutless's Server --port 27000 --public 0 --safe-player-input false --pausable true --alive-sectors-per-player 500 --listed 0 --authentication 0 --exit-on-last-admin-logout --admin 76561198017116534 --use-steam-networking 1 --threads 11 '
2017-11-25 21-38-02| Connecting to 127.0.0.1:27000, query port: 27003
2017-11-25 21-38-02| Waiting for Online polling threads
2017-11-25 21-38-02| Online polling threads finished
2017-11-25 21-38-02| Waiting for LAN polling threads
2017-11-25 21-38-02| LAN polling threads finished
2017-11-25 21-38-02| Client UDP: Error receiving from 127.0.0.1, error: An existing connection was forcibly closed by the remote host, received bytes: 0
2017-11-25 21-38-03| Client UDP: Error receiving from 127.0.0.1, error: No connection could be made because the target machine actively refused it, received bytes: 0