Change your TLauncher username in the launcher settings

Open TLauncher and look for the settings icon — usually a gear symbol in the top right or left corner of the window. Click it, then find the "Accounts" or "Profile" section. You will see a field with your current username. Click in that field, delete the old name, type your new username, and click "Save" or "explore". The change takes effect the next time you launch a game.

TLauncher stores your username locally on your computer, so changing it does not require logging into an online account or contacting support. If you have multiple user profiles set up in TLauncher, you will need to change the username for each profile separately — the launcher does not change them all at once.

After you save the new username, close and reopen TLauncher to confirm the change stuck. If the old username still appears, try clearing your launcher cache: go back to settings, look for a "Clear Cache" or "Reset" option, and follow the prompts. Then restart the launcher.

Key Takeaways

  • Your TLauncher username is stored on your computer, not on a remote server, so you can change it directly in the launcher settings without creating an account.
  • The username change takes effect when you next launch a game, and you do not need to restart your computer.
  • If you have set up multiple profiles in TLauncher, each one has its own username and you must change them individually.
  • If the old username still appears after you save, clear the launcher cache and restart the program.

Where the username appears in-game

The username you set in TLauncher becomes your in-game name when you play Minecraft or other games through the launcher. Other players will see this name in multiplayer servers, chat, and player lists. If you change your TLauncher username, your in-game name changes the next time you join a server.

On servers that track player data by UUID (a unique identifier assigned to your account), changing your username does not erase your progress or stats — the server still knows it is you. On older servers that track players by username alone, you may appear as a new player until the server updates its records, though this is rare on active servers.

Usernames that TLauncher will not accept

TLauncher has rules about what characters and lengths it allows. Your username must be between 3 and 16 characters long. You can use letters (A–Z, a–z), numbers (0–9), and underscores (_). You cannot use spaces, special characters like hyphens or periods, or non-English letters.

If you try to save a username that breaks these rules, TLauncher will show an error message and refuse to save it. Try a shorter name, remove any special characters, or replace spaces with underscores. For example, "my-player" will not work, but "my_player" will.

Changing your username on different TLauncher versions

TLauncher has released several versions over the years, and the location of the username setting can vary slightly. In newer versions, the settings icon is usually in the top right corner and the username field is under "Accounts" or "Profile". In older versions, you may find it under "Settings" > "User" or "Settings" > "Account".

If you cannot find the username field in your version, check the TLauncher menu bar at the top of the window — some older builds hide the settings in a dropdown menu rather than an icon. You can also look for a "Profile" button or tab that shows your current username and lets you edit it directly.

What happens if you use the same username on multiple computers

Each computer running TLauncher stores usernames separately. If you install TLauncher on a second computer and want to use the same in-game username, you will need to set it manually on that computer too — TLauncher does not sync usernames across devices.

Using the same username on multiple computers is fine and does not cause conflicts. Your progress and skins are tied to your account (if you are using a paid Minecraft account) or to the server you play on, not to which computer you launched from. You can play on the same server from different computers with the same username without any problems.

Usernames versus skins and profiles

Your TLauncher username is separate from your skin — the character model other players see. You can change your username without changing your skin, or change your skin without touching your username. If you want to change your skin, look for a "Skins" or "Appearance" section in the launcher settings, not the username field.

TLauncher also lets you create multiple profiles, each with its own username, skin, and game settings. If you want to play under a different name without overwriting your current one, create a new profile instead of changing the username on your existing profile. Each profile is independent.

Troubleshooting a username that will not save

If you type a new username, click save, but the old name still appears when you reopen the launcher, the change did not stick. First, make sure your username follows the rules: 3 to 16 characters, letters and numbers only, no spaces or special characters except underscores.

If the username is valid, try closing TLauncher completely and opening it again. If that does not work, clear the launcher cache: go to settings, find "Clear Cache" or "Reset Launcher", and confirm. Then restart TLauncher and try changing the username again. If the problem persists, reinstalling TLauncher may be necessary, though this is rare.

Frequently Asked Questions

Can I change my username back to what it was before?

Yes. Open settings, go to the username field, type your old name, and save. TLauncher does not prevent you from reusing old usernames. You can change your username as many times as you want.

Will changing my username delete my game progress?

No. Your progress is stored on the server or in your game files, not in your username. Changing your username does not touch your saves, inventory, or stats. On servers that use UUIDs, the server knows it is still you.

What if someone else is already using the username I want?

TLauncher does not check whether other players are using a name — it only checks the rules (length, allowed characters). You can use any name that follows the rules, even if someone else on a different server uses it. Servers tell players apart by UUID, not by name alone.

Do I need to restart my computer after changing my username?

No. Close TLauncher, reopen it, and the new username will be active. You do not need to restart your computer or any other program.

Can I have different usernames on different servers?

No. Your TLauncher username is the same across all servers and games you play through the launcher. If you want to use different names on different servers, you would need to change your TLauncher username each time, which is not practical. Creating multiple TLauncher profiles is a better solution.