Bug: Dedicated server fails to bind to port

[Back-Slash-N]

Describe the bug

When launching the dedicated server, it fails to bind to any port. As a consequence, you cannot join the server either.

Game log:

[launcher ][INFO]
[launcher ][INFO] Console initialized.
[workshop ][INFO] Couldn't load interface DevUISystem001!
[engine ][INFO] FileSystem_Init::MountGames: Successfully mounted game AppID 620 with 8 subfolders and/or VPKs.
[filesyste][INFO] File hash information not found: Hashing all VPK files for pure server operation.
[filesyste][INFO] Loading VPK file hashes for pure server operation.
[filesyste][INFO] File hash information not found: Hashing all VPK files for pure server operation.
[filesyste][INFO] Loading VPK file hashes for pure server operation.
[filesyste][INFO] File hash information not found: Hashing all VPK files for pure server operation.
[filesyste][INFO] Loading VPK file hashes for pure server operation.
[filesyste][INFO] File hash information not found: Hashing all VPK files for pure server operation.
[filesyste][INFO] Loading VPK file hashes for pure server operation.
[filesyste][INFO] File hash information not found: Hashing all VPK files for pure server operation.
[filesyste][INFO] Loading VPK file hashes for pure server operation.
[scriptsys][INFO] ScriptSystem initialising
[scriptsys][INFO] ScriptSystem initialised. AS Version 2.37.0 WIP
Timed out waiting for game mapping!
[inputsyst][INFO] Successfully Initialized Steam Controller Configuration.
[engine ][INFO] Server loaded for "Portal 2: Community Edition"
[engine ][WARN] CGameEventManager::AddListener: event 'server_pre_shutdown' unknown.
[engine ][WARN] CGameEventManager::AddListener: event 'game_newmap' unknown.
[engine ][WARN] CGameEventManager::AddListener: event 'finale_start' unknown.
[engine ][WARN] CGameEventManager::AddListener: event 'round_start' unknown.
[engine ][WARN] CGameEventManager::AddListener: event 'round_end' unknown.
[engine ][WARN] CGameEventManager::AddListener: event 'difficulty_changed' unknown.
[engine ][WARN] Failed to load gamerulescvars.txt, game rules cvars might not be reported to management tools.
[engine ][INFO] Server is hibernating
[server_p2][WARN] ConVarRef cm_is_current_community_map_coop doesn't point to an existing ConVar
[engine ][INFO] For FCVAR_REPLICATED, ConVar must be defined in client and server .dlls (sv_optimizedmovement)
[server_p2][INFO] No web api auth key specified - workshop downloads will be disabled.
[engine ][INFO] Game supporting (2) split screen players
[workshop ][INFO] Found Steam addon with ID 3386570477
[workshop ][INFO] Found Steam addon with ID 3399942544
[workshop ][INFO] Found Steam addon with ID 3200804929
[workshop ][INFO] Workshop addon list update completed in 0.00 seconds
[engine ][INFO] Starting map list refresh...
[engine ][INFO] --------------------------------------------------------
[engine ][INFO] sv_pure set to 0.
[engine ][INFO] --------------------------------------------------------
[engine ][INFO] Map search completed.
[engine ][INFO] NET_CloseAllSockets
[engine ][INFO] Host_NewGame on map mp_coop_community_hub
[server_p2][INFO] Executing dedicated server config file
[engine ][INFO] exec: couldn't exec server.cfg
[server_p2][WARN] PrecacheScriptSound 'Player.PunchDamage' failed, no such sound script entry
[server_p2][WARN] PrecacheScriptSound 'Player.PunchDisarm' failed, no such sound script entry
[server_p2][WARN] PrecacheScriptSound 'Player.HitByThrownWeapon' failed, no such sound script entry
[server_p2][WARN] PrecacheScriptSound 'HealthVial.Touch' failed, no such sound script entry
[server_p2][WARN] PrecacheScriptSound 'HealthKit.Touch' failed, no such sound script entry
[server_p2][WARN] PrecacheScriptSound 'ItemBattery.Touch' failed, no such sound script entry
[server_p2][INFO] VSCRIPT: Started server VScript virtual machine using script language 'Squirrel'
[vscript ][INFO] ==== calling mapspawn.nut
[server_p2][WARN] ConVarRef sv_portalplayers doesn't point to an existing ConVar
[server_p2][WARN] PrecacheScriptSound 'Weapon_FlareGun.Burn' failed, no such sound script entry
[engine ][INFO] Initializing Steam libraries for INSECURE Internet server. VAC not requested.
CreateBoundSocket: ::bind couldn't find an open port between 27016 and 27016
[engine ][WARN] ************************************************
[engine ][WARN] * Unable to load Steam support library. *
[engine ][WARN] * This server will operate in LAN mode only. *
[engine ][WARN] ************************************************
[engine ][WARN] InitGameServer failed

Issue Map

any

To Reproduce

1. Add -dedicated to your launch options
2. Load any map

Operating System

Windows x64 22H2 19045.3086