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Icarus Dedicated Server Not Showing Fix

Icarus Guide • Updated Mar 29, 2026

Icarus Dedicated Server Not Showing Fix

Icarus admins still run into the same discovery problem: the server is online, but friends cannot find it in the in-game list. Community troubleshooting repeatedly points to three things first: browser result limits, missing ports, and host networking oddities that keep the session from advertising correctly.

Start With the Launch Arguments

IcarusServer.exe -SteamServerName="My Icarus Server" -Port=17777 -QueryPort=27015 -MaxSearchResults=4000

The extra -MaxSearchResults=4000 flag is a common workaround when the browser simply is not returning enough community sessions for players to find your server reliably.

Quick Checks

Check Why It Matters
17777/UDP open Main gameplay traffic must reach the server
27015/UDP open Query traffic helps the server appear in listings
Search results raised Players may not receive enough entries to find your server otherwise
Single clear NIC/IP binding Some hosts advertise the wrong address after network changes

Fix Order

  1. Restart the server with explicit game port, query port, and -MaxSearchResults=4000.
  2. Have players search the full server name instead of broad filters.
  3. Retest after a full client restart, not just a return to the menu.
  4. Check whether the host machine has multiple active network adapters or a changed public IP.
  5. Use direct join or favorites while browser discovery is being corrected.

If the server works by direct connection, do not rebuild it immediately. Discovery issues are often advertisement or browser-limit problems rather than save corruption.

Need a more predictable listing baseline for Icarus? Run your Icarus dedicated server on Supercraft and start from a hosting setup built for stable session discovery.

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