How to Update a Vault Hunters 2 Server | Safer 2026 Guide
Vault Hunters 2nd Edition is still actively developed, which cuts both ways for updates: patches regularly fix real bugs, but the pack can also change fast enough that a changelog skim matters more than on a stable, mature pack.
Running into crashes right now instead? See the Vault Hunters 2 crash-fix guide. For RAM sizing, see how much RAM does a Vault Hunters 2 server need, or the Vault Hunters 2nd Edition pack page.
1. Back up before reading the changelog
Talent trees, Vault progression and base builds all live in the world save. A backup taken before you even decide to update is the cheapest insurance against an update that goes wrong.
2. Read the changelog for bug fixes and removed content
Because this pack is actively developed, changelogs are worth reading in both directions: what got fixed (useful to know if you were hitting a specific bug) and what got removed or reworked (the thing that can actually break an existing world).
3. Install the new server pack clean
- Download the server pack — not the client pack — for the exact version you're targeting.
- Install into a clean mods folder rather than overwriting the previous version in place.
- Stop the server with the stop command first; don't kill the process mid-save.
4. Confirm Java 17 is still what's running
This pack needs Java 17 on Forge 1.18.2 regardless of which pack version you're on — worth a quick check after any update, since a host or environment change can silently flip the default JVM.
5. Verify the first boot and a real Vault run
Wait for the server to reach Done, then have someone run an actual Vault to confirm generation and talents both still work as expected before opening the server back up to everyone.
FAQ
Is it safe to update Vault Hunters 2nd Edition mid-season?+
Usually, but the pack is still actively developed and patches arrive often — some specifically to fix known bugs like the bounty-completion crash. Read the changelog for your target version before committing, and keep a backup either way.
Will my talent progression survive an update?+
It should, since talents are stored in the world/player data rather than the pack files — but a backup is still the only real protection if a specific update changes how talent data is read.
Do I need Java 17 after updating?+
Yes — Vault Hunters 2nd Edition runs on Forge 1.18.2, which needs Java 17 regardless of which pack version you're on.
Update Vault Hunters 2 with a safety net
CoalHost takes an automatic backup before anything risky, so a Vault Hunters 2 update that breaks something is a rollback, not a redo.
View Vault Hunters Hosting →