Yes, you can change your Minecraft Java username, but the process depends on which account type you have

If you play Minecraft Java Edition, you can change the name that appears in-game. The steps differ depending on whether you own a Mojang account (the older login system) or a Microsoft account (the current system). Microsoft accounts get one free name change every 30 days. Mojang accounts can change their username once every 30 days as well, though the interface is different.

The change takes effect when ready in-game, but other players may still see your old name in their friends lists or chat history for a few hours while the change syncs across Minecraft's servers.

Key Takeaways

  • Microsoft account holders can change their username once every 30 days through the official Minecraft launcher or the Minecraft website.
  • Mojang account holders use a different process on the legacy Mojang website, and the change also happens once per 30 days.
  • Your old username becomes available for someone else to claim after 30 days of inactivity.
  • Changing your username does not affect your game progress, worlds, or inventory — only the name displayed in-game.
  • If you cannot change your username, your 30-day cooldown period may not have ended, or your account may have a name change restriction.

How to change your username on a Microsoft account

Open the Minecraft Launcher and sign in with your Microsoft account. Click the "Settings" icon (the gear symbol) in the top right corner of the launcher window. Select "Account" from the left menu. You will see your current username displayed with an option to change it.

Click the "Change" button next to your username. Type your new username — it must be between 3 and 16 characters long and can only contain letters, numbers, and underscores. Usernames are not case-sensitive, so "Player123" and "player123" are treated as the same name. Click "Change Name" to confirm.

The new name takes effect when ready. If you are currently in a world or server, you may need to log out and back in to see the change reflected everywhere.

How to change your username on a Mojang account

Visit the official Minecraft website at minecraft.net and sign in with your Mojang account credentials. Click your profile name in the top right corner and select "Profile" from the dropdown menu. On your profile page, you will see your current username with an option to change it.

Click "Change" next to your username. Enter your new username using the same rules: 3 to 16 characters, letters, numbers, and underscores only. Confirm the change by clicking the button on the next screen.

Mojang accounts are less common now because Microsoft has been migrating older accounts to the Microsoft login system. If you have not logged in recently, you may be prompted to migrate your account before you can change your username.

What happens to your old username

After you change your username, your old name enters a 30-day cooldown period. During this time, no one else can claim it, and you cannot change back to it. After 30 days pass without anyone using the name, it becomes available for any player to claim.

This cooldown exists to prevent rapid name-swapping and to give you time to reconsider. If you change your mind within the 30-day window, you cannot revert to your previous name — you would have to wait for the cooldown to expire and then hope no one else has claimed it.

Why you might not be able to change your username

The most common reason is that your 30-day cooldown period has not ended since your last name change. The system will show you exactly when you can change your name again. If you have never changed your username before, you should be able to change it when ready.

Some accounts have name change restrictions placed by Mojang or Microsoft, usually because of a violation of the Community Standards (such as using an offensive or impersonating username in the past). If you see a message saying your account is restricted, you cannot change your username until the restriction is lifted. Contact Minecraft Support through the official website if you believe this is an error.

If you are trying to change your username but the button is greyed out or missing, make sure you are signed into the correct account and that you are using the official Minecraft launcher or website — third-party launchers cannot change your username.

Your game progress stays the same after a name change

Changing your username does not affect your worlds, inventory, achievements, or any other game data. Your player UUID (a unique identifier assigned to your account) remains the same, so the game recognizes you as the same player. If you are playing on a server, the server owner will see the same player UUID, so your permissions and data there do not change either.

Other players may see your old username in their friends lists or in chat logs for a few hours after you change it, because the change takes time to sync across all of Minecraft's servers. This is normal and resolves on its own.

Frequently Asked Questions

Can I change my username more than once every 30 days?

No. Both Microsoft and Mojang accounts enforce a strict 30-day cooldown between name changes. If you try to change your username before the cooldown ends, the system will show you the exact date and time when you can change it again.

What if someone else takes my old username after the 30-day cooldown?

Once the 30-day cooldown expires, your old username becomes available to anyone. If someone claims it before you change back, you cannot reclaim it. The only way to get it back would be if that player stops using it and lets it sit inactive for 30 days, then you would have to claim it before anyone else does.

Do I need to change my password when I change my username?

No. Your username and password are separate. Changing your username does not affect your account security or password. You should never need to change your password just because you changed your username.

Will my friends still be able to find me after I change my username?

Yes. Your friends list and their ability to join your worlds are tied to your account UUID, not your username. They will see your new username in their friends list once the change syncs, usually within a few hours.

Can I use special characters or spaces in my new username?

No. Minecraft usernames can only contain letters (A–Z, a–z), numbers (0–9), and underscores (_). Spaces, hyphens, and other special characters are not allowed.