FLauncher 12.0.4

FLauncher 12.0.4 — Account Privacy

This release adds a set of features for running multiple Minecraft accounts
without them being linkable to the same person. Everything below is off or
inert until you configure it — normal instances are unaffected.

📖 Full setup guide: ACCOUNT_PRIVACY_GUIDE.md

New

• Lock an instance to one account. A bound instance now refuses to launch
  if its account is missing or broken, instead of silently falling back to your
  default account (which used to quietly expose the wrong account).
• Per-instance proxy. Give each instance its own outgoing IP (SOCKS5/HTTP,
  with optional auth). The proxy is applied to the game and exposed to mods as the
  FLAUNCHER_PROXY environment variable so your in-game proxy mod can route the
  server connection.
• Pre-launch proxy check. Before launching a proxied instance, FLauncher
  verifies the proxy is reachable and actually changes your IP. If not, it warns
  before you connect on your real IP.
• Per-instance game language. Override an instance's locale (e.g. de_DE) so
  its client language can match its proxy region.
• Linkability Report. Scans your instances and flags anything that links two
  accounts — a shared account, a shared proxy, or an unprotected instance.
• Stream-safe mode. Masks account usernames in the UI for streaming/screen-share.

All settings and kill switches live under Settings → Launcher → Account Privacy.

Notes

• In-game server-connection routing is handled by your proxy mod via
  FLAUNCHER_PROXY; the launcher routes the game's web traffic and hands off the
  proxy. See the guide.
• Every new safeguard has an off switch and defaults to safe. If something blocks
  you, the kill switches are all in one place.

Install

Windows: download FLauncher-Windows-MSVC-Setup-12.0.4.exe below. Installed
copies on 12.0.2+ (MSVC) will auto-update.