Once the installation is finished, you can boot up the game and log into either your Microsoft or Mojang account — whichever one is associated with your "Minecraft: Java Edition" purchase.

Your Minecraft account could be at risk unless you take action, as the Mojang classic completes migration from Java to the Minecraft Bedrock Edition.

Mojang has issued a “last call” to users who still have legacy accounts to log into Java Edition. These accounts, which have been around since before Microsoft acquired the Swedish studio in ...

To be clear, Microsoft is assuring Minecraft Java players that nothing is changing other than the way they log into the game's servers.