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

Tekken 8 Error Codes

Tekken 8's errors are almost all online — alphanumeric codes like A-10704-10005-2, A-00302-00877-1 and D-00001-00019-1 that surface when matchmaking, rematching, or sitting in menus. They point to connection, NAT/port, or server-side problems. Here's what each common error means and the fastest fix.

Error codes

A-10704-10005-2 A connection/communication error while online

Cause: An unstable connection to Tekken's servers, strict NAT, or blocked ports.

Fix:
  1. Power-cycle your modem and router (unplug ~1 minute) to get a fresh IP.
  2. Switch to a wired Ethernet connection and open a strict NAT via UPnP or port forwarding.
  3. Update Tekken 8 and Windows to the latest patch, then retry.
A-00302-00877-1 A connection error, often when trying to rematch after a ranked or player match

Cause: A dropped session between the two players or unstable routing.

Fix:
  1. Restart the game and router, then requeue.
  2. Use a wired connection and disable VPNs during play.
  3. Verify the game files if it persists across many matches.
D-00001-00019-1 A disconnect error, often after sitting idle on the menu

Cause: An idle timeout or a session drop to the server.

Fix:
  1. Avoid leaving the game idle on menus; return to an active screen before it times out.
  2. Restart the game and check server status before requeueing.
  3. Restart your router to clear a stale connection.
Connection timed out / unable to connect to server The game can't reach or keep a connection to Tekken's online services

Cause: A server outage, ISP routing problems, or ports blocked by ISP/firewall.

Fix:
  1. Check the official Tekken/Bandai Namco status channels for outages first.
  2. Allow Tekken 8 through your firewall and forward its ports; enable UPnP.
  3. If it only affects you, your ISP may be blocking ports — test another network or contact them.
A-00100-00002-3 General connection/communication error with Tekken's online service

Cause: The client failed a handshake with Bandai Namco's servers — usually a strict NAT, firewall, or a temporary server-side hiccup.

Fix:
  1. Restart your router and the game to refresh the connection.
  2. Open the required ports / enable UPnP so Tekken 8 gets an Open NAT type.
  3. Wait and retry if Bandai Namco servers are under maintenance or overloaded.
A-00100-00803-1 Connection error joining online services

Cause: Packet loss or a blocked route between your client and the matchmaking service.

Fix:
  1. Switch from Wi-Fi to a wired connection to reduce packet loss.
  2. Temporarily disable VPN/proxy which can break the route to the game servers.
  3. Flush DNS and set a public DNS (1.1.1.1 / 8.8.8.8), then relaunch.
C-00001-00803-1 Communication error during an online session

Cause: The session dropped mid-handshake — often peer NAT mismatch or an unstable opponent connection.

Fix:
  1. Set your NAT type to Open via port-forwarding or UPnP.
  2. Retry matchmaking; the code is often transient and tied to one opponent.
  3. Verify game files (Steam) or reinstall if the error is persistent.
A-02802-00898-1 Connection error, frequently when rematching or entering ranked

Cause: The rematch request timed out against the server or the peer.

Fix:
  1. Decline long rematch queues and search a fresh match.
  2. Ensure no other device is saturating your upload bandwidth.
  3. Restart the game to clear a stale session token.
C-00001-00898-2 Communication error with the online service (session/step failed)

Cause: Bandai Namco does not publish exact meanings; the code segments identify which session step failed — almost always network/NAT related.

Fix:
  1. Get an Open NAT (port-forward TCP/UDP ports for Tekken 8 or enable UPnP).
  2. Disable firewall/antivirus interference for the game executable.
  3. Retry after a few minutes; server-side congestion produces this code in waves.

Fixes that work for most Tekken 8 (PC, PlayStation 5, Xbox Series X|S) errors

  1. Verify/repair the game files (Steam: Properties -> Installed Files -> Verify integrity; EA app/Epic/Ubisoft: Manage -> Repair) — this replaces corrupted files behind most crashes and fatal errors.
  2. Update your GPU driver with a clean install (use DDU), and install the latest Microsoft Visual C++ Redistributables (x86 and x64) plus the DirectX End-User Runtime — missing runtimes and stale drivers cause most launch crashes.
  3. Clear the DirectX Shader Cache (Windows Settings -> System -> Storage -> Temporary files, or Disk Cleanup) and delete the game's local shader/cache folder in AppData\Local, then relaunch.
  4. Disable overlays (Steam, Discord, GeForce Experience, EA, Epic) and any third-party antivirus/VPN, and add the game to your firewall and antivirus exceptions.
  5. Check the game's official server/status channels before assuming a local problem — many named connection errors are a maintenance window or outage and clear on their own.

FAQ

How do I fix Tekken 8 connection errors like A-10704-10005-2 or A-00302-00877-1?

These are online connection errors. Power-cycle your modem and router to get a fresh IP, switch to a wired Ethernet connection, and open a strict NAT via UPnP or port forwarding. Allow Tekken 8 through your firewall, disable any VPN, and make sure both the game and Windows are fully updated. A-00302-00877-1 often appears when rematching — restarting the game and router before requeueing usually clears it.

What does Tekken 8 error D-00001-00019-1 mean?

D-00001-00019-1 is a disconnect error that commonly appears after the game sits idle on a menu, caused by an idle timeout or a session drop to the server. Avoid leaving the game idle on menus, restart the game and check Bandai Namco's server status before requeueing, and restart your router to clear a stale connection.

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