ARK Joining Failed Unknown Error | Basic Troubleshooting Steps

If you’re getting an “ARK joining failed unknown error” when trying to join a server in ARK: Survival Evolved (or ARK: Survival Ascended), it usually means the game client encountered a problem connecting to the server, but doesn’t provide a clear message.

Here are the most common causes and fixes:

✅ 1. Basic Troubleshooting Steps

• Restart the Game: Fully close ARK and relaunch it.

• Reboot Your PC/Console: This can clear up temporary issues.

• Try Another Server: Helps determine if the issue is server-specific.

🔍 2. Common Causes & Fixes

🔧 Server Version Mismatch

• Cause: Your game version doesn’t match the server’s.

• Fix: Update your game via Steam/Epic, or ensure the server is updated.

🌐 Network or Firewall Issues

• Cause: Firewall or NAT issues may block the connection.

• Fix:

  • Temporarily disable your firewall or antivirus and try again.

  • Use a wired connection if possible.

  • Forward the following ports if you’re hosting:

    • UDP 7777, 7778, 27015

  • Make sure your NAT type is open or moderate.

🧼 Corrupted Game Files

• Fix: On Steam

  1. Right-click ARK in Library → Properties

  2. Go to Installed Files

  3. Click “Verify integrity of game files”

🗂️ Mod Mismatch (Modded Servers)

• Cause: Your mods are outdated or different from the server.

• Fix:

  • Unsubscribe from the server’s mods.

  • Let ARK re-download them when you try joining.

  • Clear ARK’s mod cache:
    Go to \Steam\steamapps\common\ARK\ShooterGame\Content\Mods and delete unnecessary folders.

👤 Server Whitelist / Ban

• Cause: You may be banned or not whitelisted on the server.

• Fix: Contact the server admin or check server rules.

📛 Corrupted Save or Profile

• Fix:

  • Navigate to \ARK\Saved or \ARK\ShooterGame\Saved\LocalProfiles and try renaming or deleting your .arkprofile.

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🧪 Advanced: Launch Options

You can try launching the game with specific options:

1. In Steam → Right-click ARK → Properties → General → Launch Options

2. Add:

   -USEALLAVAILABLECORES -sm4 -d3d10


   (Good for older PCs; can help performance and compatibility)

🆘 Still not working?

If the issue persists:

• Let me know if you’re on PC, Xbox, or PlayStation

• Mention whether it’s official, unofficial, or private-hosted

• Share any mods involved

• Tell me when the issue started (after update, new mod, etc.)