Why can''t my friend join my Valheim server after a game update?

When your friend cannot join your Valheim server after a game update, it is often due to version mismatches, server configuration issues, or connectivity problems. Valheim is a game that frequently receives updates, and these updates can sometimes cause compatibility issues between the host and the players trying to join. The first step is to ensure that both you and your friend have updated the game to the latest version. This can be done by checking for updates on your respective platforms (Steam, Xbox, etc.) and downloading any available patches.\n\nIf both parties have updated the game but the issue persists, the next step is to verify the server settings. If you are hosting a dedicated server, ensure that the server software is also updated to match the game version. Dedicated servers require manual updates, which can be overlooked. For example, if you are using a SteamCMD-based server, you need to run the update command to fetch the latest server files. Failing to do so will result in a version mismatch, preventing players from joining.\n\nAnother common issue is related to port forwarding. Valheim uses specific ports (2456-2458 by default) to allow players to connect to your server. If these ports are not properly forwarded on your router, your friend will be unable to join. To fix this, log into your router''s admin panel and ensure that the necessary ports are open and forwarded to the IP address of your server machine. You can find detailed instructions for port forwarding on your router''s manufacturer website or through online guides.\n\nFirewall and antivirus software can also block connections to your server. Ensure that Valheim and its associated ports are added to the exception list in your firewall settings. For example, on Windows, you can add Valheim to the allowed apps list in the Windows Defender Firewall settings. Similarly, if you are using third-party antivirus software, check its settings to ensure that Valheim is not being blocked.\n\nIf you are using a community-hosted server or a third-party hosting service, contact the provider to confirm that their servers have been updated to the latest version of Valheim. Some hosting services may take longer to roll out updates, which can cause temporary incompatibility issues. Additionally, check if the server has any mods installed, as mods can sometimes break after an update, causing connection problems. If mods are the issue, either update them to versions compatible with the latest game update or temporarily disable them to see if that resolves the problem.\n\nFinally, if none of the above solutions work, try restarting both the server and your game client. Sometimes, a simple restart can resolve lingering issues caused by the update. If the problem persists, consider creating a new server world and inviting your friend to join. This can help isolate whether the issue is with the server itself or the game files.\n\nIn summary, troubleshooting multiplayer issues in Valheim after an update involves checking for version mismatches, updating server software, verifying port forwarding, adjusting firewall settings, and ensuring mod compatibility. By following these steps, you can quickly resolve most connection problems and get back to exploring the biomes, crafting powerful items, and battling fearsome creatures with your friends.