Iron Gate has dated Valheim 1.0 for September 9, 2026. It ships the Deep North, the final biome of the original roadmap, alongside PS5 and Switch 2 releases. For anyone running a dedicated server, the main thing to prepare for is the world-content update that touches generation. Note: dedicated servers currently only accept connections from Windows (Steam) clients. Crossplay with console platforms is not working on dedicated servers due to a platform networking issue.
What 1.0 Changes for Servers
- Deep North biome: the last unfinished region of the map gets its real content. Like Mistlands and Ashlands before it, expect the biome to populate in unexplored parts of existing worlds, while already-explored terrain keeps its old generation.
- Console releases: PS5 and Switch 2 versions launch, but dedicated servers currently only support Windows (Steam) connections. Console players can use player-hosted worlds but cannot join third-party dedicated servers.
- Mods will break: every major Valheim content patch has broken BepInEx and most mods for days to weeks until maintainers catch up. 1.0 will be no different, and possibly worse given the size.
The Prep Checklist
1. Back up your world now, and again on September 8. Your world files live in the server's worlds_local folder (.db and .fwl files). Copy both. A pre-1.0 backup is your only path back if the update interacts badly with your world.
2. Decide your update posture before launch day. Two honest options:
- Update day one, vanilla: if your server runs few or no mods, updating immediately is fine and your players get Deep North on launch night.
- Pin and wait, modded: if your server depends on BepInEx mods, do not update on day one. Hold the server on the current version until your critical mods publish 1.0-compatible releases. A modded server that updates before its mods is just a server nobody can join.
3. Stage a test world. Spin up a second Valheim instance (or a temporary small plan), copy your world onto it, and run the 1.0 update there first. You will see immediately whether your world loads, whether generation behaves, and what breaks, without risking the community's main world.
4. Check your RAM headroom. Each new biome has historically pushed memory usage up. If you are already near your plan's memory ceiling with your current player count, upgrade before September 9 rather than during the launch-night rush. Our Valheim server requirements guide has the sizing table.
5. Keep crossplay off on your dedicated server. Crossplay on dedicated servers is currently broken due to a platform networking issue. Only Windows (Steam) clients can connect to dedicated servers. This means BepInEx mods work fine since they require the Steam networking path anyway. If you have console players in your group, they will need to use player-hosted worlds for now. Our Valheim crossplay explainer has the full platform breakdown.
FAQ
Will my existing world get Deep North content? In previously unexplored parts of the world, yes, following the same pattern as Mistlands and Ashlands. Terrain your players already explored keeps its old generation, so communities wanting the full biome sometimes generate a fresh world or use a world regeneration tool on the far north.
Do I need to wipe for 1.0? No wipe is required. The backup-and-test-first routine above is about safety, not necessity.
When will mods work again after 1.0? Historically, BepInEx itself updates within days and popular mods follow over one to three weeks. Track your critical mods' Thunderstore pages, and see our mod sync guide for keeping players' mod lists matched to the server.
Can Switch 2 and PS5 players join my existing server? Not currently. Dedicated servers only accept connections from Windows (Steam) clients due to a platform networking issue. Console players can host and join player-hosted worlds, but third-party dedicated servers are Windows/Steam only for now.
Ready Before the Rush
A Valheim server that is backed up, staged, and sized before September 9 turns launch day into a non-event. Valheim server hosting plans run on NVMe SSD with DDoS protection included, and you can add a temporary second instance for staging.