How do I fix the "World Not Found" error when joining a multiplayer server?

The ''World Not Found'' error in Valheim is a common multiplayer issue that occurs when a player attempts to join a server but the game cannot locate the world file. This error can stem from several causes, including mismatched game versions, incorrect server settings, or missing world files. Understanding the game mechanics and troubleshooting steps can help resolve this issue and get you back to exploring the biomes with your fellow Vikings.\n\nFirst, ensure that both the host and the joining players are using the same version of Valheim. The game frequently receives updates, and version mismatches can prevent players from accessing the server. To check your game version, open the Steam client, navigate to your library, and verify that Valheim is up to date. If an update is available, install it before attempting to join the server again.\n\nNext, confirm that the server is properly configured. If you are hosting a dedicated server, ensure that the world file is correctly named and located in the appropriate directory. The world file should be in the ''worlds'' folder within the Valheim save directory, typically found in ''C:\Users\[YourUsername]\AppData\LocalLow\IronGate\Valheim\worlds'' on Windows. If the file is missing or incorrectly named, the server will not recognize the world, resulting in the ''World Not Found'' error.\n\nIf you are using a community-hosted server, verify that the server address and password are entered correctly. Double-check the IP address, port number, and any additional settings provided by the server host. A single typo can prevent you from connecting. Additionally, ensure that the server is online and not experiencing downtime or maintenance.\n\nFor players hosting a non-dedicated server, make sure the world is set to ''Public'' in the server settings. If the world is set to ''Private,'' only players on the same local network can join. To change this, open the server settings in the Valheim main menu, select the world, and toggle the privacy setting to ''Public.'' This allows players from outside your network to join the server.\n\nAnother common issue is firewall or antivirus software blocking the connection. Ensure that Valheim and its associated ports are allowed through your firewall. On Windows, you can do this by navigating to the Windows Defender Firewall settings and adding an exception for Valheim. Similarly, check your antivirus software to ensure it is not blocking the game.\n\nIf the issue persists, consider restarting both the server and your game client. Sometimes, temporary glitches can cause the ''World Not Found'' error, and a simple restart can resolve the problem. Additionally, verify that your internet connection is stable, as a weak or intermittent connection can also cause this error.\n\nFinally, if none of the above solutions work, try creating a new world and testing the connection. This can help determine if the issue is specific to the world file or a broader problem with your setup. If the new world works, the original world file may be corrupted. In this case, you can attempt to restore a backup of the world file if one exists.\n\nIn summary, the ''World Not Found'' error in Valheim can be resolved by ensuring game version compatibility, verifying server settings, checking firewall and antivirus configurations, and restarting the game or server. By following these steps, you can troubleshoot the issue and continue your Viking adventures with friends.