What causes the "Connection Timed Out" error in Valheim?

The Connection Timed Out error in Valheim is a common multiplayer issue that occurs when the game fails to establish or maintain a connection between players. This error can stem from various factors, including network instability, server configuration problems, or even in-game mechanics. Understanding the root causes and implementing practical solutions can help you and your fellow Vikings enjoy a seamless multiplayer experience.\n\nOne of the primary causes of the Connection Timed Out error is network latency or instability. Valheim relies on a peer-to-peer (P2P) connection system, meaning one player hosts the game, and others connect directly to their server. If the host''s internet connection is slow or unstable, other players may experience delays or disconnections. For example, if the host is in the Black Forest biome fighting Greydwarfs while their internet connection fluctuates, other players may struggle to stay connected. To resolve this, ensure the host has a stable and fast internet connection, preferably using a wired connection instead of Wi-Fi.\n\nAnother common cause is incorrect server settings or port forwarding issues. Valheim requires specific ports (2456-2458) to be open for multiplayer connections. If these ports are blocked or not properly forwarded, players will encounter the Connection Timed Out error. For instance, if you''re hosting a server and your router doesn''t allow traffic through these ports, your friends won''t be able to join. To fix this, access your router''s settings and configure port forwarding for the required ports. Detailed instructions can often be found on your router''s manufacturer website or in Valheim''s official support documentation.\n\nIn-game mechanics can also contribute to this error. For example, if the host''s world file becomes corrupted or too large due to extensive building or exploration, it may cause connection issues. This is especially common in biomes like the Plains or Mountains, where large structures or complex terrain can strain the game''s performance. To mitigate this, regularly back up your world files and avoid overloading the game with excessive building projects. Additionally, consider using dedicated servers for larger groups, as they are more stable than peer-to-peer hosting.\n\nFirewall or antivirus software can also interfere with Valheim''s multiplayer connections. These programs may block the game''s access to the internet, causing the Connection Timed Out error. For example, if your antivirus flags Valheim as a potential threat, it may prevent you from joining a server. To resolve this, add Valheim as an exception in your firewall or antivirus settings. This ensures the game can communicate freely without interruptions.\n\nFinally, outdated game versions or mod conflicts can lead to connection issues. If the host and players are running different versions of Valheim, compatibility problems may arise. Similarly, mods that alter game mechanics or networking can cause instability. For example, a mod that changes the spawn rates of creatures in the Swamp biome might conflict with the host''s game, leading to disconnections. To avoid this, ensure all players are using the same game version and disable any mods before joining a multiplayer session.\n\nPractical tips to prevent the Connection Timed Out error include using a dedicated server for larger groups, ensuring all players have stable internet connections, and keeping the game and mods up to date. If the issue persists, try restarting your router, verifying game files through Steam, or reinstalling Valheim. By addressing these factors, you can minimize disruptions and enjoy a smoother multiplayer experience in the world of Valheim.