How to Fix an Aged Server That Keeps Crashing
Aged is realistic medieval progression on Fabric 1.20.1 — age-by-age tech gates with no creative shortcuts, built for groups who want a world that takes a season to master. Its crash causes trace mostly back to the growing infrastructure load as players advance through ages.
See the Aged pack page for the full RAM and setup breakdown before you chase anything else.
1. Server won't boot: check the Java version first
Fabric on Minecraft 1.20.1 requires Java 17. A consistent, immediate boot failure with no players online points here first.
- Confirm the server is launching under Java 17, not an older runtime
2. Later-age progression adding load
Aged's age-by-age gates mean later ages unlock more complex machinery and systems than earlier ones, with no shortcuts to skip ahead. A server that handled an early age comfortably can start showing real lag once players reach a later, more demanding age — this is the pack's intended progression curve, not a bug.
3. Config corruption or a bad mod update after a pack upgrade
If the server ran fine and only started crashing after updating the modpack version or hand-editing a config, treat that update as the first suspect rather than reopening the Java or RAM questions above.
4. RAM under the pack's realistic floor
The real floor is 8 GB, confirmed by direct boot testing. Below that, later-age progression load from section 2 hits harder because there's no memory headroom to absorb it — expect GC pauses and TPS drift that build as a world progresses.
FAQ
Why does my server fail to boot?+
Aged runs on Fabric for Minecraft 1.20.1, which requires Java 17. A server on an older Java runtime will fail at startup.
Why does my server lag more as players advance through ages?+
Aged is built around age-by-age tech gates with no creative shortcuts — later ages unlock more complex machinery and systems than earlier ones. A server that was comfortable in an early age can start showing real load once players progress into a later, more demanding age, which is expected for this pack's slow-burn design.
How much RAM does Aged actually need?+
The real floor is 8 GB, confirmed by direct boot testing. The realistic, no-shortcuts progression design means players build out substantial infrastructure over a season-long playthrough, and that infrastructure adds up.
Host Aged on hardware sized for its real floor
Aged needs a real 8 GB floor to absorb later-age progression load without tipping into a watchdog kill, and taking a backup before any risky change keeps a bad edit from costing a season's progress.
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