When no folder has the pinned version and the selected Microsoft account
owns Minecraft: Java Edition (the mcstore entitlement, asked again with the
saved token), Prepare downloads it the way other launchers do: the version
JSON from piston-meta by its pinned sha1, the client jar, this system's
libraries (the JSON's os.name rules) and the asset index with its objects
(the sounds), each checked against its sha1, written whole, 8 at a time,
into the data folder's minecraft/ in the official layout. The next
preparations find it there first. An asset that fails is a line in the log;
anything else is an error.
Not signed in, or signed in without the game, the not-found error says so as
its last line. Ownership stays required: there is no other path to the
download, and nothing of Mojang's is part of Horizon.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Ludovic Marie
d30df8ce33