Fortnite Error Code errorcode-100: How to Fix It

Easy 10-45 minutes Medium Severity Verified June 2026
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Error Code
errorcode-100
Brand
Fortnite
Product Type
game
Severity
Medium
DIY Difficulty
Easy
Estimated Fix Time
10-45 minutes
Fortnite error code errorcode-100 is an EOS (Epic Online Services) connection error that prevents the game from communicating properly with Epic's backend servers. This typically occurs due to network issues, firewall restrictions, corrupted game files, or problems with the Epic Games Launcher. While it is a medium-severity issue, most players can resolve it without contacting support by following a few targeted troubleshooting steps.
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Tools You'll Need

How to Fix Error Code errorcode-100

  1. Check Epic Games Server Status

  2. Restart the Epic Games Launcher and Fortnite

  3. Restart Your Router and Modem

  4. Flush DNS Cache and Reset Network Settings

    Make sure to run Command Prompt as Administrator on Windows, otherwise the commands will fail silently.

  5. Allow Fortnite and Epic Launcher Through Your Firewall

    Only disable your antivirus temporarily as a test. Re-enable it immediately afterward and add proper exceptions rather than leaving it disabled.

  6. Change Your DNS Server to a Public DNS

  7. Verify Fortnite Game Files

  8. Reinstall the Epic Games Launcher

    Before uninstalling, note the install path of your games so you can point the new Launcher to the existing files and avoid a full re-download.

  9. Check for VPN or Proxy Interference

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When to Call a Professional

If you have completed all steps above and still receive errorcode-100, contact Epic Games Support directly at epicgames.com/help. Provide your Epic account username, the exact error code, your platform, and a description of all steps you have already tried. In rare cases, your account may have a backend authentication issue that only Epic's support team can resolve server-side. If you suspect your ISP is blocking Epic's EOS endpoints (common on some school or corporate networks), contact your ISP or network administrator.

Frequently Asked Questions

What does Fortnite error code errorcode-100 mean?
Fortnite errorcode-100 is an EOS (Epic Online Services) connection error. It means the game client was unable to establish or maintain a connection to Epic's online services infrastructure, which is required to authenticate your account and enter the game. It is most commonly caused by network issues, firewall blocks, DNS problems, or corrupted Launcher files.
Is Fortnite errorcode-100 caused by an Epic server outage?
It can be. Always check status.epicgames.com first. If Epic's EOS services show degraded performance or an active incident, your errorcode-100 is caused by their servers, and no local troubleshooting will fix it until Epic resolves the issue on their end.
How do I fix Fortnite errorcode-100 on PS4, PS5, or Xbox?
On consoles, start by restarting the console fully (not rest/sleep mode). Then restart your router and modem. Go to your console's network settings and manually set your DNS to 8.8.8.8 (primary) and 1.1.1.1 (secondary). Check that Fortnite is up to date in your console's game library. If the issue persists, delete and reinstall Fortnite — your progress is saved to your Epic account, not locally.
Why does Fortnite keep showing errorcode-100 even after restarting?
Persistent errorcode-100 after restarts usually points to a firewall or antivirus blocking EOS network calls, a VPN interfering with the connection, corrupted game or Launcher files, or a stale DNS cache. Work through steps 4 through 8 in this guide, particularly the DNS flush, firewall exception, and file verification steps.
Will I lose my Fortnite progress if I reinstall the game to fix errorcode-100?
No. All Fortnite progress, V-Bucks, cosmetics, and Battle Pass data are stored server-side on your Epic Games account. Reinstalling the game or the Launcher will not affect your account data in any way.

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