Authlib Injector

If it is written on the personal documentation that your launcher is equipped with AuthLib, then you need to add the following parameter to the server startup arguments, and also place the latest version of authlib-injector from this site in the main directory of the minecraft server - 获取 authlib-injector (yushi.moe) If you do not use BungeeCord/Velocity, then you need to enable online mode on your minecraft servers.

JVM Arguments:

-javaagent:authlib-injector.jar=https://dpc.launcher.YOUR_DOMAIN/yggdrasil 
-Dauthlibinjector.disableHttpd=true

⚠️ If you are using BungeeCord or Velocity, you need to download authlib-injector on all servers and BungeeCord/Velocity and enable enforce-secure-chat at the same time.However, only BungeeCord/Velocity should enable online mode, and the internal MC server should disable online mode.

You can find out about the compatibility of your launcher with authlib-injector on the second page of your personal documentation:

⚠️Authlib injector is responsible for the security of your minecraft server, does not allow people who do not use your launcher to log on to the server. He is also responsible for authorization on your server, confirming the account through authorization when you first log in through the launcher, in addition, he is responsible for installing skins and capes

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