Arc Raiders ARMR0002 Matchmaking Error Connection Fix

What is Arc Raiders Error ARMR0002?

When attempting to join a raid in Arc Raiders (Steam App ID 1808500), players may encounter the error "Matchmaking has failed. Please try again in a little while." with error code ARMR0002. This error prevents the game client from connecting to Embark Studios' matchmaking servers, blocking players from joining raids or grouping with friends on PC, PS5, and Xbox. Sometimes it appears as if the player cancelled matchmaking, even though they did not.

The critical first question is: is it you or the servers? ARMR0002 can be either a client-side network issue or a server-side overload problem. Server-only errors like ARSB0003 and ARAU0297 indicate the backend is down, while ARMR0002 can be either — so diagnosing correctly saves you from wasting time troubleshooting your network when the servers are simply at capacity.

When does it occur?

• During peak hours when matchmaking servers are under heavy load
• During the "Initializing Uplink" connection phase before a match begins
• After a game update or backend maintenance without advance notice
• When EasyAntiCheat fails to validate or its service is corrupted
• On networks with Strict NAT type or aggressive firewall rules
• During high-traffic map rotations that overload regional servers

Common causes

• Server overload — Embark Studios' matchmaking backend hits capacity during peak hours and new content drops
• EasyAntiCheat corruption — A corrupted EAC installation prevents the client from authenticating with matchmaking servers
• Strict NAT type — Router firewall blocking UDP ports required for peer-to-peer matchmaking handshakes
• DNS resolution failures — Stale DNS cache preventing connection to matchmaking endpoints
• DirectX 12 instability — Arc Raiders runs on Unreal Engine 5 and defaults to DX12, which can cause connection-adjacent crashes on some GPU/driver combinations
• Overlay conflicts — Discord and Steam overlays injecting into UE5's render pipeline can interfere with EAC and network handshakes

Step-by-step fixes

1. Check server status first — Before troubleshooting your PC, check if servers are down. Visit [ArcStatus.com](https://arcstatus.com/) for real-time status updated every 60 seconds, or check the #server-status channel on the [official Arc Raiders Discord](https://discord.gg/arcraiders). If ARSB0003 or ARAU0297 errors are widespread, the issue is server-side — wait and retry. Follow [@ARCRaiders](https://twitter.com/ARCRaiders) on X for maintenance announcements.

1. Flush DNS and renew IP — Open Command Prompt as Administrator and run: ipconfig /flushdns then ipconfig /release then ipconfig /renew. This clears stale DNS entries that may prevent connection to Embark's matchmaking endpoints.

1. Repair EasyAntiCheat — Navigate to Steam\steamapps\common\ARC Raiders\EasyAntiCheat\ and run EasyAntiCheat_Setup.exe as Administrator. Select ARC Raiders from the dropdown and click Repair Service. Alternatively, use the batch files in the Installers subfolder: right-click the uninstaller, then the installer, and run both as Administrator.

1. Switch to DirectX 11 — Right-click Arc Raiders in Steam > Properties > Launch Options and enter -dx11. This bypasses DX12 crashes caused by GPU driver incompatibilities. Note: expect slightly lower FPS in DX11 mode since UE5 is optimized for DX12.

1. Disable overlays — Turn off Discord overlay (User Settings > Game Activity > toggle off), Steam overlay (Steam > Settings > In-Game > uncheck), and any other overlay software. UE5 combined with EAC is known to conflict with overlay hooks.

1. Enable UPnP on your router — Log into your router admin panel (typically 192.168.1.1 or 192.168.0.1). Find the UPnP setting under NAT or Gaming and enable it. This allows Arc Raiders to automatically open the required ports. If UPnP is unavailable, manually forward these ports — TCP: 27015, 27036, 56747, 59553, 59563-59566, 59607; UDP: 27015, 27031-27036, 54597-54611, 61736-61748.

1. Verify game files — Right-click Arc Raiders in Steam > Properties > Local Files > Verify integrity of game files. This repairs corrupted game files that can cause authentication failures during matchmaking.

1. Switch DNS to Google or Cloudflare — Open Settings > Network & Internet > your connection > DNS server assignment > Edit. Set Preferred DNS to 8.8.8.8 (Google) or 1.1.1.1 (Cloudflare) and Alternate to 8.8.4.4 or 1.0.0.1 respectively. Apply and restart your connection.

If it still doesn't work

If ARMR0002 persists after all client-side fixes, try changing your matchmaking region: go to in-game Settings > Gameplay > Server and set it to Automatic or try a different region manually. For persistent EAC failures showing Error 210 or Error 30005, perform a full EAC reinstall: delete both C:\Program Files (x86)\EasyAntiCheat and C:\Program Files (x86)\EasyAntiCheat_EOS folders, restart your PC, then launch Arc Raiders to trigger a fresh EAC download. If you continue to experience "Initializing Uplink" disconnects specifically during map rotations, this is almost certainly server-side — report the issue through [Embark's Help Center](https://id.embark.games/arc-raiders/support) with your session timestamp and the error code for tracking.