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Offline Mode/Cracked servers - What are they?


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Level 51 : Grandmaster Architect
A cracked, or offline-mode server is a server run with offline mode triggered to false in the server.properties file. It's seen in the properties file as this: "online-mode=false".

You've probably heard of it, but a lot of people don't know exactly what it does. You can still log onto these servers
just fine too. What is difference exactly?

Normally, by default, the properties file has it set to true. What setting it to false does: Is it turns off user-name authentication through Mojang. Normally, when you log into a public server, you don't directly connect to it first, instead it runs your account through Mojang's authentication servers. This determines if you're using a paid Minecraft account, and if you are, it lets you proceed, and you connect to the Minecraft server.

Running a server in offline-mode turns this username authentication off. This way, you don't need a paid account to play, instead, you can use the Offline mode in Minecraft. This is accessible when you're using the launcher, if you don't enter an account, or if you can't connect to the Mojang servers, it says "Login Failed", or some other error, and gives you the option to play in offline mode. From here, you can choose to play Single player. Normally you can't play Multiplayer, but if you have some offline-mode server IPs handy, you can connect to them and play multiplayer!

However, if you simply use Minecraft's Offline mode, to log into a server also in offline mode, it will simply use the Username "Player". This will also prevent other people using the Minecraft Offline mode from connecting, because they'll just have the "Player" ID as well. Some Bukkit servers fix this, however. But maybe you want to use your name. You can still log into any offline-mode server with your paid account, and it works just fine. There is however, another solution: There's "cracked" clients/launchers specifically designed to log onto offline servers. They can provide a username, that the offline mode server will use to ID you, instead of the "Player" that the normal Minecraft sends.

There's another huge advantage to this setting- the ability of users being able to login to your server isn't affected at all by the status of Mojang's services. For example: if Minecraft.net is down(and it is a lot) people can't login to normal, online-mode=true public servers until it's up again. However, when online-mode is set to false, logging in doesn't run you through Minecraft.net at all, you just connect straight to the server. And it means that while other public servers are down, offline mode servers still work like a charm.

Regardless, there are several disadvantages to playing on an offline server, even with a launcher that can give you a name. The biggest one is that people can log in as you, or whatever name you used. You can even log on with a name of a paid account. You can't have Admin rank on these servers either, because if there was, people could simply logon as the name of an Admin to get Admin rank.

But! There's a Bukkit plugin that protects people's gameplay sessions under a certain name, and what it does is that it spawns you, usually in a jail or enclosed area, and you can't build or play until you create a password under the Username you're using, or entered the password for the username you're using. It doesn't use the passwords from Minecraft paid accounts, it's the server's own authentication system separate from Mojang's.

However-The authentication is very primitive, and if people get banned under one name, they can just log in under another and keep trolling. To tell the truth: Offline-mode servers do give you Minecraft gameplay, but it's not called online mode for a reason-it's not meant to be run publicly as a server. It was mostly made for LAN Minecraft gameplay, or server testing.

If you want the full experience of Minecraft, BUY a Minecraft.net account. You get to have your own custom skin too. And you're supporting Mojang. Don't put off spending $30, instead, get the full experience. To me, you're just compromising a bit too much if you're relying on Offline-mode servers just to play Online Minecraft Multiplayer.

Update #5 : 06/10/2012 10:59:14 pm6/10/12

corrected some dodgy clarification on the new info.

Update #4 : 06/01/2012 9:48:17 pm6/01/12

added new info on when authentication servers are down, new paragraph of info

Update #3 : 05/30/2012 8:37:37 pm5/30/12

updated spacing and information

Update #2 : 03/13/2012 9:32:55 pm3/13/12

checked info, cross-checked with other blog. confirmed, updated.

Update #1 : 02/28/2012 10:58:59 pm2/28/12

Linked info with other blog, updated info

Comments : 23

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1 - 23 of 23

Im pretty sure theres no server without the /register so its not really a problem.
also you cant just use another name whenever you want theres this magical thing called dont get too shocked now...IP BANS!
  • dhtdht020
  • Level 10
  • Journeyman Crafter
  • October 27, 2017, 11:02 pm
IP Bans can be bypassed by turning the router off and on again.
  • GamingKim
  • Level 1
  • New Crafter
  • November 29, 2015, 3:49 am
Thanks for clarifiying what a offline/cracked server is!
Is cosmicPvp offline????
i want to do /give dp 5!!!!XD
  • Tanner952000
  • Level 4
  • Apprentice Explorer
  • February 7, 2015, 1:00 pm
Do you have to put a minecraft server in offline mode to make it A hub server?
  • Dittoslash
  • Level 1
  • New Crafter
  • August 2, 2015, 6:09 am
  • nickthekid
  • Level 10
  • Journeyman Narwhal
  • September 2, 2014, 10:26 am
xD im going to go on my server with it offline xD and go on as my friends xD they and prank the other ones XD HEHE im evil xD :3
i think
  • tsteele93
  • Level 1
  • New Miner
  • September 21, 2013, 9:16 am
"[size=12px][color=rgb(34,34,34)][bgcolor=rgb(204,204,204)]If you want the full experience of Minecraft, BUY a Minecraft.net account.[/bgcolor][/color][/size][size=12px][color=rgb(34,34,34)][bgcolor=rgb(204,204,204)]"[/bgcolor][/color][/size]

Plus, on Saturday mornings like this (Sep 21 2013) you can get out in the real world and do something since Mojang has been down all morning and my $120 (3xMC and several MCPEs) wasn't spent on server backups... :-(
  • adamwbb
  • Level 12
  • Journeyman Ninja
  • February 25, 2013, 5:21 am
is there a way to authenticate both mineshafter and minecraft in online mode?
  • Yigit_11
  • Level 34
  • Artisan Electrician
  • August 8, 2013, 3:57 am
Yeah, is it possible?
  • T_Train132
  • Level 16
  • Journeyman Mountaineer
  • January 27, 2013, 7:25 pm
BrozCraft Cracked and NO HAMACHI NEEDED
IP: mc.brozcraft.com (type this into your cracked minecraft client)
  • roughtoast
  • Level 1
  • New Miner
  • December 15, 2012, 10:37 pm
i have a minecraft server called greenlands survival

no greifing or anything as we have protections

its fully cracked NO-HAMATCHI


small comunity

plenty of things to do

own store that you can buy from with real cash

no cheating

a happy comunity

and seems im the owner im always happy to help :)
what is the i.p.
offline mode also lets people with cracked clients,such as Mineshafter,they cant get on online mode servers
join this server 24/7 crack pvp/survival hamachi needed


Hamachi ID:Epicnezz2,Epicnezz3,Epicnezz4,Epicnezz5

  • Gmoddude
  • Level 25
  • Expert Architect
  • May 30, 2012, 4:31 pm
Hamachi Servers arent allowed to be advertised on PMC.
  • Rawwk
  • Level 36
  • Artisan Engineer
  • July 28, 2012, 11:39 am
Yes they are, they go to a hamachi server thread on the forums.
  • Ilevor
  • Level 1
  • New Miner
  • March 13, 2012, 10:34 am
sorry its with hamachi
Minecraft server Ilevor1
  • Gmoddude
  • Level 25
  • Expert Architect
  • May 30, 2012, 4:31 pm
Hamachi Servers are not allowed to be advertised on PMC
  • heartshapedBox
  • Retired Moderator
  • Level 22
  • Expert Miner
  • December 9, 2011, 3:30 pm
wow, whenever I was cracked I had NO idea it was so bad o:. I have online mode on now lol.

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