1. Configure server online-mode off
If you are using a proper server you'll need to set "online-mode" to "false" in the server properties. You can ignore this step if you're using in-client LAN.
- Edit
server.properties
found in the parent folder of your minecraft folder.
- Find and update
online-mode=false
The first player should now be able to connect fine as normal with the proper account name, or start the LAN server.
2. Modify displayname of second player
To get the second person connected, first go to your .minecraft
folder. Find launcher_profiles.json
and open it up with a text editor.
Near the end of the file you should find "displayName":
and then your current display name. Edit your name to anything different, keeping the "
s either side of it. Make sure that it's a valid username (only use A-Z, 1-9, and _, not over 16 characters, etc.).
3. Preventing correction of the file
This stage doesn't always seem to be required. If you're having trouble with your name being auto-corrected you may need to either disconnect your Internet, or make the launcher_profiles.json
file read only after having edited your name.
To make the file read only on Windows: right click it, click "Properties", and then tick "Read-only" in the "Attributes" section of the "General" tab.
After you've done that, or if it worked originally, open up your launcher. You should see your edited name in the bottom right:
4. Start minecraft
You can now start minecraft. You can also connect your Internet or make the file writable at this point. Hopefully, you should now be able to join the server with a different name and without kicking off the other player.
Your name may be automatically be corrected if you start the launcher with your Internet connected and the launcher_profiles.json
file not on read-only. You will also be unable to join proper online servers with the fake name, however you can use this method to set it back to your original name, or relog to have the launcher correct it.
Note to others: This doesn't allow piracy in any way. You still need to have a paid account and all of the game files downloaded. It's pretty much the same as /nick
on modded servers.
No, you do not have to download another copy of minecraft. Even if you purchase a second account, you still would not download a second copy of minecraft.
If you are planning on playing single player(offline) then you can just create two separate worlds. One that is yours, one that is your sisters. You don't need two accounts to do that. You can make several worlds if you want.
If you want to play Multiplayer(online) on a server, you can still share an account. I would recommend you both play on different servers. Though, if you wanted to, you could both use the same account and play in different areas of that server.
A second account would allow you to both log into the same server and play your own games with your own game name.
Best Answer
Unfortunately, this is not possible. You might get away with the one account thing, but not the one computer. Minecraft requires a keyboard and mouse, and while it is possible to have more than one Minecraft open at a time, you cannot move with both because when you move to the other one, the one you were on goes to pause. Unless you could find some program where you could plug in 2 keyboards and 2 mouses and dedicate them to certain programs (One to each MC), than this is not feasibly possible, sorry.