A: That is standard for Alpha. Ignore the error. If you see "Minecraft has crashed!", check your Java version. You need Java 8 (not Java 17 or 21) specifically for Alpha.
This link is provided for educational and nostalgic purposes only. We encourage players to support the game's developers by purchasing the latest version of Minecraft.
Minecraft Alpha v1.2.6 is officially available for download directly through the standard Minecraft Launcher
You must have purchased Minecraft Java Edition at any point in the past. If you have a Microsoft or Mojang account, you are eligible.
This specific version was largely a "bug fix" update, but it holds a special place in history as the stable peak of the Alpha era.
: Never open your modern survival worlds in Alpha 1.2.6; they will likely corrupt instantly. Missing Features