Fixed Error : Helldivers 2 Failed to Join Game Lobby. Timed Out

Here are several fixes for the “Helldivers 2 Failed to Join Game Lobby. Timed Out” error:

Common Fixes:

Restart Your Network
- Turn off your router/modem for at least 5 minutes, then turn it back on. This resolves many connectivity glitches.
Disable IPv6 in Network Adapter Settings
- Open Control Panel > Network and Internet > Network Connections.
- Right-click your active network adapter > Properties.
- Uncheck Internet Protocol Version 6 (TCP/IPv6).
- Click OK and restart your PC.
Sign Out and Back In on Steam
- Logging out and back into Steam can refresh your connection and clear temporary issues.
Verify Integrity of Game Files
- In Steam, right-click Helldivers 2 > Properties > Local Files > Verify Integrity of Game Files.
Delete Shader Cache
- Press Windows + R, type %appdata% and press Enter.
- Navigate to Arrowhead folder > Helldivers2 folder and delete it.
- This resets some game settings but can solve corrupted cache problems.
Turn Off Crossplay and Set Matchmaking Privacy to Public
- In game settings, disable crossplay and ensure matchmaking privacy is set to public, which has helped some players.
Use Different Network or Disable VPN
- Switch to another network like a mobile hotspot or disable VPNs to avoid connection blocks.
Play with Friends or Use SOS Beacon
- If matchmaking fails, start a solo mission and use the SOS Beacon stratagem to attract other players.

Ensure your game and network drivers are fully updated.
Switch game language settings to English if you encounter language-related issues.
If problems persist, wait for server-side fixes as reported by developers for peak times.

These steps collectively resolve most lobby timeout errors in Helldivers 2.