ValheimAll fixes & Troubleshooting
From launch errors to the last FPS drop. Pick your problem and go straight to the solution.
Valheim: Startup crash after updating with mods
Valheim stops launching after a patch with mods? Test the vanilla installation with backed-up saves.
Valheim: dedicated server causes high CPU load on the gaming PC
Your Valheim server on the same PC eats CPU time? Patch 1.0.20 fixes an uncapped server frame rate when V-Sync is enabled in the client.
Valheim: Duplicated terrain and FPS loss after 1.0
Valheim shows duplicated terrain or unusually poor performance? Check client and server hotfix versions.
Valheim: Friends on other platforms cannot join
Valheim crossplay fails? Check server mode and join code before changing local files.
Valheim: Dedicated server is unreachable
Friends cannot find your Valheim server or the connection fails? Check the startup message, ports 2456–2457, crossplay mode and the firewall.
Valheim: Cannot join remote servers after 1.0
Valheim cannot load a reachable remote server after updating? Check the hotfix version first.
Valheim: Client and server version mismatch
Valheim refuses to join because of different versions? Align the client, dedicated server, mods and delayed platform patches.
Valheim: Character changes missing after server play
Your Valheim character loses items or progress after playing on other servers? Back up character files and use 1.0.14 or later.
Valheim: Deep North content missing in an old world
Valheim lacks new biome content in explored areas? Check world generation before resetting your save.
Valheim: legitimately obtained items marked as cheated
Valheim flags normally obtained items or build pieces as cheated? Patch 1.0.20 resets the flag. Check your client and server versions.
Valheim: No voice chat: set up team communication
Cannot find working voice chat in Valheim? Use a separate voice application for team calls.
Valheim: Dedicated server loads an empty or wrong world
Your Valheim server starts an empty world instead of your base? Check -world, -savedir and the save location before overwriting backups.
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