MC Startup Script v2.1.0

v2.1.0

A major refresh of mc-startup-script, moving the project from the legacy monolithic batch script to a lightweight PowerShell-based launcher.

NOTE: You only need to download START.bat - the PowerShell core will automatically download itself.

What's New

• Added automatic Java runtime discovery across PATH, JAVA_HOME, common installation folders, Minecraft Launcher runtimes, and Windows Registry locations.
• Added accurate Java version detection using the installed runtime itself.
• Added Mojang API integration for Minecraft-to-Java compatibility checks.
• Added local caching for Java requirements, with offline fallback support.
• Added automatic server version detection from jar metadata.
• Renamed Paper, Folia, Purpur, and vanilla jars are now supported without relying on their filenames.
• Added support for Minecraft's new year-based versioning scheme.
• Added support for Java 25 and Minecraft 26.x.
• Added automatic migration from legacy v1 StartupScript.conf files to the new JSON configuration format.
• Added improved Forge, NeoForge, Fabric, Paper, Folia, and vanilla server detection.
• Added modern Discord webhook embeds with status colors, timestamps, server details, exit codes, and start/stop indicators.
• Added consistent normal-stop and crash messaging across the terminal and Discord.
• Added a redesigned setup wizard with clearer sections, validation, configuration review, and consistent prompts.
• Added a cleaner server status dashboard for normal operation.
• Added visible restart countdowns when crash-loop protection is triggered.
• Added safer self-updates using temporary files and a separate updater process.
• Added unattended update checks that do not interrupt automatic restart loops.
• Added bounded restart history and cleanup of temporary launch variables to minimize long-running overhead.

Improvements

• More reliable Java selection for users with multiple installed runtimes.
• Better handling of renamed server jars.
• Improved setup validation and error messages.
• Consistent [Y/n], [y/N], and [Enter] prompt behavior.
• Reduced reliance on hardcoded Minecraft version assumptions.
• Updated documentation to reflect the current v2 architecture.
• Preserved compatibility with existing v1 server installations.

Upgrade Notes

Existing v1 installations can upgrade automatically when using a v2 release containing both START.bat and core.ps1.

Legacy configuration files are retained and imported into the new config/StartupScript.json format. Server worlds, jars, libraries, EULA files, and other server data are left untouched.