Lost Ark Error Codes

Most Lost Ark errors are login and authentication problems between Steam, Amazon Games and the game servers. Error 10010 (Server Authentication Failed) and 10027 (heavy traffic) are the two you'll hit most — one is usually fixable locally, the other just means the queue is full. Here's what each common code means and the fastest fix.

Error codes

10010 Server Authentication Failed at login

Cause: The game couldn't authenticate your session — internet problems, an IPv6/DNS issue, missing game files, or an Amazon-Steam account link problem.

Fix:
  1. Disable IPv6 in your network adapter so the PC uses IPv4, and set DNS to 8.8.8.8 / 8.8.4.4.
  2. Restart the game client and your home network, then switch from wireless to a wired connection.
  3. Validate/verify your game files in Steam, and relink your Amazon Games and Steam accounts.
10027 Cannot connect to the server due to heavy traffic

Cause: The login queue for your server is full, so you're turned away — a server-load issue, not a client fault.

Fix:
  1. Wait in the queue — it drains as players load in; there's no local fix.
  2. Try a less busy server or play off-peak hours.
  3. Don't spam reconnect; if you drop, restart and re-queue.
10025 Connection/login error reaching the server

Cause: A temporary connection or session problem during sign-in.

Fix:
  1. Restart the game and Steam, then retry.
  2. Power-cycle your router and confirm your connection is stable.
  3. Flush DNS (ipconfig /flushdns) and disable any VPN.
G0x9-SPELPWP1P2NT Cannot connect to the server — the game exits to desktop

Cause: A temporary server-side connectivity problem between the client and Lost Ark's servers.

Fix:
  1. Wait a few minutes and restart the game client — this is usually a transient server hiccup.
  2. Check the official Lost Ark server status before retrying in case of maintenance.
  3. If it repeats, reboot your router and verify your firewall isn't blocking the client.
0PELPWP1F2NT Cannot connect to the server at the moment — check network and firewall settings

Cause: A network or firewall block is stopping the client from reaching the servers.

Fix:
  1. Wait a few minutes and relaunch after reviewing your network and firewall settings.
  2. Allow Lost Ark and Steam through Windows Firewall (and any third-party security suite).
  3. Restart your modem/router and update your network drivers.
140011 An unknown error has occurred

Cause: A generic client/service fault — often a corrupted file, an outdated client, or a temporary account-service problem.

Fix:
  1. Verify integrity of game files in Steam to repair any corrupted data.
  2. Fully update the game and restart Steam, then relaunch.
  3. If it persists, reinstall the EasyAntiCheat service that ships with the game.
An error has occurred (exiting the game) Generic crash-to-desktop error on launch or mid-session

Cause: Software bugs, server issues, outdated GPU/network drivers, or corrupted game files.

Fix:
  1. Check Lost Ark server status first — if servers are down, no local fix will help.
  2. Update your GPU and network drivers, then verify game files in Steam.
  3. Run the game as administrator and disable overlays (Discord, GeForce Experience) that can crash it.
Unavailable in your region Lost Ark blocks the connection based on your detected region

Cause: Your IP is routed through, or located in, a region where the game isn't served.

Fix:
  1. Disable any VPN or proxy that places you in an unsupported region, then restart the client.
  2. If you must use a VPN for routing, pick a server in a supported region (e.g. your home country).
  3. Confirm your account's region matches the client you're launching.
Purchase Failed In-Game In-game store purchase is auto-declined

Cause: The Steam overlay is disabled — Lost Ark needs it enabled to complete in-game purchases.

Fix:
  1. In Steam, open Settings → In-Game and enable 'Enable Steam Overlay while in-game'.
  2. Restart the game so the overlay loads, then retry the purchase.
  3. Ensure your Steam Wallet/payment method is valid and try again after a few minutes.

Fixes that work for most Lost Ark (Steam PC) errors

  1. Check the game's server status first (official status page, or the studio's support/X account) — most named connection errors are a maintenance window or outage, and no local fix will help until servers are back.
  2. Restart the game and your PC/console, and power-cycle your router — a fresh connection clears the majority of temporary login and connection errors.
  3. On PC, allow the game and its launcher through your firewall and antivirus, and disable any VPN or proxy — these block the authentication handshake behind many 'can't connect' codes.
  4. Flush your DNS (Command Prompt: ipconfig /flushdns) or switch to a public DNS like 8.8.8.8 / 1.1.1.1 if the game can't reach its servers.
  5. Verify/repair the game files (Steam: Properties -> Installed Files -> Verify; Epic: repair) if the error points at a corrupted install or update.

FAQ

How do I fix Lost Ark error 10010?

Error 10010 is 'Server Authentication Failed' at login. Disable IPv6 in your network adapter (so the PC uses IPv4) and switch DNS to 8.8.8.8 / 8.8.4.4, run Lost Ark as administrator and verify game files in Steam, and if it persists unlink and relink your Amazon Games and Steam accounts.

Can I fix Lost Ark error 10027?

Not really — 10027 means 'Cannot connect to the server due to heavy traffic', i.e. the login queue for your server is full. There's no client-side fix: wait in the queue, try a less busy server or play off-peak, and avoid spamming reconnect.

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