Does "Reinstall Server" delete my progress?

"Reinstall Server" sounds like a harmless repair button, but it isn't — it re-runs the egg's install script and can overwrite core files. This article explains what it really does so you don't lose progress.

Note: There's no Reinstall button in the client area — there, software is (re)installed from the Software page, which keeps your world (files it replaces are moved to a _previous folder).

What Reinstall actually does

Reinstall re-runs the egg's install script. Depending on the server type it can overwrite core/server files — it's not a safe "repair" button for your world. Your world folder often survives, but you shouldn't rely on that.

How to use it safely

1. Always take a backup first — Back up now on the Backups page, or download your world (and mods/plugins/configs) via Files or SFTP.
2. Consider whether Reinstall is really what you need. If your goal is to fix a broken server, try restoring a backup from the Backups page or fixing the specific error instead.
3. Use Reinstall only when you understand it may wipe and you've backed up.

Warning: Don't treat Reinstall as a repair tool. It can overwrite server files. Back up before you ever click it.

Frequently asked questions

Will Reinstall keep my world? Often yes, but not guaranteed — it depends on the server type. Never rely on it; back up first.

My server is broken. Should I reinstall? Usually no. Restoring a backup or fixing the specific error is safer. Reinstall is a last resort once you understand the risk.

What's the safest way to repair a server? Identify the actual error (share your log via mclo.gs) or restore a known-good backup, rather than reinstalling blindly.