How do I change my name in Minecraft multiplayer offline mode in windows?


Open up a notepad file, and put this command into it.

java -Xms512m -Xmx1024m -cp "%APPDATA%\.minecraft\bin\*" \
-Djava.library.path="%APPDATA%\.minecraft\bin\natives" \
net.minecraft.client.Minecraft "yourusername"

Replace yourusername with whatever name you wish. Save the notepad file as CUSTOMNAME.bat

You can use that file to now run minecraft with your name changed. (you may have to go into your folder options and enable the viewing of system files to see the customname.bat after you have saved it depending on your current windows settings)

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  • In 1.6.4 (latest release right now), I'm doing this but in the game it says "version 1.5" in the corner. When run through the launcher, it's fine. I'm almost positive I shouldn't even have version 1.5 on this computer. Any idea what's going on? – James B Sep 30 '13 at 0:07
java -Xincgc -Xmx1024m -cp "%APPDATA%\.minecraft\bin\minecraft.jar;%APPDATA%\.minecraft\bin\lwjgl.jar;%APPDATA%\.minecraft\bin\lwjgl_util.jar;%APPDATA%\.minecraft\bin\jinput.jar" -Djava.library.path="%APPDATA%\.minecraft\bin\natives" net.minecraft.client.Minecraft>debug.txt 2>&1
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The easiest way that I know of is to use a cracked client. That way you can easily change your username and keep track of different usernames that you have used on different servers.

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