Old version of the launcher (Minecraft Premium required) Few know that the old launcher from Mojang can still be used and compatible not only with the old Minecraft but also with the new game versions However, the function of completely restarting the game client still remained, but now you had to select the 'Force Update' parameter in the launcher settings. In fact, this significantly saved Internet traffic and made it possible to update the game client much faster.

Make sure you've run git submodule update -init as this script uses the AutoOL submodule.But the most important advantage of the old launcher was the redesigned system for updating the game client, which allowed you to download and replace only those files that were to be changed when updating the game.

Applies OLauncher patches to the decompiled sources.

Turns decompiled sources into a git repository.

Downloads original jar and decompiles it.

The commands must be run in the following order to build from source: Support demo users (if they have a Microsoft account but no Minecraft profile).Replace Mojang's Hopper service with our own.You just need a runtime to open the actual launcher.

Automatically downloads the appropriate JVM for all minecraft versions.

You will have to recreate your minecraft profiles, as the new launcher_profiles.json format is incompatible with this version. minecraft directories or delete/rename the launcher_profiles.json file. Download the olauncher-xxx-redist.jar file.

This aims to support java 8 through modern java. The old launcher we all know and love with the quality-of-life features of the new launcher.

Minecraft old launcher alpha