Known Issues of Multiplayer on macOS 15+

Cause

In newer versions of macOS, the “Local Network” permission was introduced. To request this permission, the process must run as a native macOS app. As a result, the Minecraft process launched by a bare Java installation cannot request this permission, and therefore cannot connect to the local network, which in turn makes normal multiplayer impossible.

Current Status

Cannot be resolved. Please try other multiplayer methods.