What causes the "World Not Found" error in Valheim multiplayer?

The ''World Not Found'' error in Valheim multiplayer is a common issue that occurs when players attempt to join a server or hosted world but cannot connect due to various technical or gameplay-related reasons. This error typically arises from mismatched game versions, incorrect server settings, or issues with the world file itself. Understanding the root causes and implementing practical solutions can help players resolve this frustrating problem and enjoy seamless multiplayer gameplay.\n\nOne of the primary causes of the ''World Not Found'' error is a version mismatch between the host and the joining players. Valheim frequently receives updates, and if the host is running a different version of the game than the players trying to join, the world will not load. To fix this, ensure that all players and the host have updated their game to the latest version. This can be done by checking for updates on Steam or other platforms where the game is installed. If the issue persists, verify the integrity of the game files through the Steam client to ensure no files are corrupted.\n\nAnother common cause is incorrect server settings or issues with the world file. If the host is using a dedicated server, they must ensure that the server is properly configured and that the world file is correctly named and placed in the appropriate directory. For example, the world file should be located in the ''worlds'' folder within the Valheim save directory. If the file is missing or corrupted, the game will fail to load the world. Hosts can create a backup of their world files to prevent data loss and ensure smooth gameplay.\n\nNetwork-related issues can also trigger the ''World Not Found'' error. If the host''s internet connection is unstable or if there are firewall or port-forwarding issues, players may be unable to connect to the server. To resolve this, the host should check their router settings and ensure that the necessary ports (default is 2456-2458) are open for Valheim. Additionally, players should ensure that their own network connections are stable and that no third-party software is blocking the game''s access to the internet.\n\nFor players using mods, incompatibilities between mods or outdated mods can cause the ''World Not Found'' error. If the host or any player has mods installed, they should ensure that all mods are up to date and compatible with the current version of Valheim. Disabling mods temporarily can help identify if they are the source of the problem. Players can also use mod managers to streamline the process of enabling or disabling mods.\n\nFinally, if the issue persists, players can try creating a new world and testing multiplayer functionality. This can help determine if the problem is specific to the world file or a broader issue with the game or server setup. Hosts should also consider using third-party server hosting services, which often provide more stable and reliable connections compared to self-hosted servers.\n\nIn summary, the ''World Not Found'' error in Valheim multiplayer can be caused by version mismatches, incorrect server settings, corrupted world files, network issues, or mod incompatibilities. By following the steps outlined above, players can troubleshoot and resolve this error, ensuring a smooth and enjoyable multiplayer experience. Always keep your game updated, back up your world files, and check your network settings to minimize the risk of encountering this issue.