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Documentation Index

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Offline mode lets you play singleplayer and LAN worlds without a Microsoft account. TecniLauncher generates a consistent offline UUID derived from your chosen username using the same MD5-based algorithm Minecraft uses, so your player identity stays stable across sessions.
1

Open the launcher and select offline mode

Launch TecniLauncher and click Offline Mode or Play Offline.
2

Enter a username

Type any username you want to appear in-game. If you leave the field empty, the launcher uses Jugador as the default.
3

Launch the game

Click Play to start Minecraft with your offline profile. No account verification is performed.
Offline mode only works on servers that have online-mode disabled. You cannot join servers that require a genuine premium Minecraft account. Skin display is not available in offline mode.
Your UUID is deterministic — the same username always produces the same UUID. This means your inventory and progress in singleplayer worlds are preserved across sessions as long as you keep the same username.
Use a consistent username every time you play offline. Changing your username changes your UUID, which makes you appear as a new player in existing singleplayer worlds.
Yes, you can change your offline username at any time. However, because the UUID is derived from the username, a different username produces a different UUID. In an existing singleplayer world, you will appear as a new player and will not have access to your previous inventory or player data.

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