🎮 Game Error Codes What it means & how to fix it

Epic Games Launcher Error Codes

Epic Games Launcher errors split into LS- (launch), IS- (install), DP-/DR- (download/patch) and the EOS-ERR family (Epic Online Services sign-in, used by Fortnite and many other titles). The prefix tells you where the problem is — here's what each common code means.

Error codes

LS-0006 The game version is out of date / needs verification

Cause: The installed files don't match the expected version, usually an interrupted update.

Fix:
  1. Verify the game files (Library → three dots → Verify).
  2. Restart the launcher and let the update finish.
  3. Reinstall the game if verification keeps failing.
LS-0013 App version mismatch / files being verified

Cause: The launcher is checking or repairing files before it can start the game.

Fix:
  1. Let the verification finish, then relaunch.
  2. Restart the Epic Games Launcher.
  3. Verify the game files manually if it doesn't clear.
LS-0014 The game can't start / files missing

Cause: Required game files are missing or blocked, often by antivirus.

Fix:
  1. Verify the game files.
  2. Add the game and launcher to your antivirus exceptions.
  3. Reinstall the game if files were quarantined.
IS-0009 Install error / corrupted installation files

Cause: The install files are corrupted or the target folder has a permissions/space problem.

Fix:
  1. Verify the game files, or delete the partial install and reinstall.
  2. Install to a different drive with free space.
  3. Run the launcher as Administrator.
DP-01 Download error / can't write update data

Cause: The launcher couldn't download or write patch data — a corrupted cache or a blocked connection.

Fix:
  1. Clear the launcher webcache (%LocalAppData%\EpicGamesLauncher\Saved\webcache).
  2. Restart the launcher and router.
  3. Pause and resume the download, or switch download region.
DR-01 Download stuck / data read error

Cause: A network drop or a failing route interrupted the download.

Fix:
  1. Pause and resume the download.
  2. Restart the router; use a wired connection.
  3. Clear the webcache and retry.
AS-3 Can't connect to Epic servers

Cause: The launcher couldn't reach Epic's servers — a firewall, VPN, or outage.

Fix:
  1. Check Epic Games status, then restart the launcher.
  2. Allow the launcher through the firewall and disable any VPN.
  3. Flush DNS (ipconfig /flushdns).
EOS-ERR / login failed Epic Online Services sign-in error

Cause: A game using Epic Online Services (e.g. Fortnite) couldn't authenticate — server load, an account link issue, or a blocked connection.

Fix:
  1. Check Epic Games status for an EOS/login outage.
  2. Sign out and back in to your Epic account; re-link platform accounts if needed.
  3. Restart the launcher and disable any VPN/proxy.

Fixes that work for most Epic Games Launcher errors

  1. Check the service status page first (EA Help/status, Epic Games status, Steam status via steamstat.us) — if the servers are down, no local fix will help.
  2. Fully restart the launcher and your PC, and restart your router; on Windows flush DNS (Command Prompt: ipconfig /flushdns).
  3. Run the launcher as Administrator and make sure Windows, the launcher, and your GPU drivers are fully up to date.
  4. Clear the launcher cache / webcache and add the launcher to your antivirus and firewall exceptions — a large share of launcher codes are cache corruption or a blocked connection.
  5. If a specific install keeps failing, verify/repair the game files, or uninstall and reinstall the launcher itself as a last resort.

FAQ

How do I fix Epic Games Launcher error DP-01?

DP-01 is a download/patch error. Clear the launcher webcache (%LocalAppData%\EpicGamesLauncher\Saved\webcache), restart the launcher and router, then pause and resume the download or switch download region.

What does EOS-ERR mean on the Epic Games Launcher?

EOS-ERR is an Epic Online Services sign-in error used by Fortnite and other titles. Check Epic Games status for a login outage, sign out and back in to your Epic account, re-link platform accounts if needed, and disable any VPN.

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