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How to Set a Password on Your Valheim Server

How to password protect your Valheim server.

Set via startup: -password "YourPassword"

Must be at least 5 characters and cannot match the world name.

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Server Startup Parameters

Complete reference for all Valheim dedicated server startup parameters and launch options.

Optimize Server Performance

Fix lag, reduce desync, and optimize your Valheim dedicated server. Covers zones, instances, network tuning, and building limits.

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