If you encounter 0.0.0 while using a reputable launcher with no mods, report it as a bug to the launcher developer – but first, ensure your antivirus isn't blocking the launcher's ability to read JAR manifests. Happy (properly versioned) crafting!

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Minecraft Alpha 0.0.0 Glitch -

If you encounter 0.0.0 while using a reputable launcher with no mods, report it as a bug to the launcher developer – but first, ensure your antivirus isn't blocking the launcher's ability to read JAR manifests. Happy (properly versioned) crafting!