Assist With Minecraft LAN Server On Mac?

This is not trivial because it requires forcing a _JAVA_Possibility override at launch (or system huge).

Diagnose

To diagnose this because the cause, first launch Minecraft from terminal with the _JAVA_Options overridden.

1. Shut Minecraft
2. Open 🔎 Highlight (🔎 in upper proper of Desktop)
3. Search for "Terminal", open the app
Paste the following command in:

_JAVA_Options=-Djava.internet.preferIPv4Stack=true /Purposes/Minecraft.app/Contents/MacOS/launcher

Try to hook up with LAN server and see if it fixes the issue

Permanently Fix

Utilizing Minecraft Launch Options: @TheOnlyMrCat provides a method right here that does not involve editing any information by hand. Please strive that earlier than making adjustments to the Minecraft launcher.

Patching the launcher manually:

Use this technique solely if you have problems using @TheOnlyMrCat's resolution.

This _JAVA_Choices override may be supplied in many places but since launching from Terminal will not be perfect, we want to use a technique that fixes when clicking on the icon. At time of posting, the Apple really useful method for offering overrides is inside the App bundle itself utilizing something referred to as LSEnvironment

1. Optionally install a Textual content Editor corresponding to Atom to edit XML information.
2. Using Finder, go to Functions
3. Find (don't open) the Minecraft App
4. jerry's blog on Minecraft, Show Bundle Contents
5. Go into the Contents folder and locate Data.plist
6. Proper click Information.plist, Open With, Atom (or TextEditor)
Close to the underside of the file, add the following in between the LSEnvironment _JAVA_Options -Djava.net.preferIPv4Stack=true

Sadly this doesn't take effect instantly. This is due to the way in which Mac caches it's launch services.