Compatibility
What works with Minecraft 1.4.5
Released 19 Dec 2012. Everything below comes from the projects' own published data, and each row says how we know.
Java requirement
Java 8 or newer
Published by Mojang for this exact version. An older runtime will not start it. Get a verified build.
Server software with builds
Real, downloadable builds for 1.4.5.
| Software | Build | Published | Size | Checksum | Download |
|---|---|---|---|---|---|
| Legacy Fabric | #72 | 28 Jul 2026 | 0.2 MB | Not published | jar ↗ |
Mod loaders
Support declared in each loader's own metadata.
- Minecraft Forge6.4.2.448declaredsupported
- Legacy Fabric0.19.3inferredsupported
Clients that can join
Protocol 49 is shared with these versions, so they can connect without a translation proxy.
Frequently asked
Which Java version does Minecraft 1.4.5 need?
Java 8 or newer. Mojang publishes this requirement in the version metadata, so an older runtime will refuse to start the server.
Which Minecraft versions can connect to a 1.4.5 server?
Any client speaking protocol 49: 1.4.4. Versions with a different protocol number need a translation proxy such as ViaVersion.
Which server software supports 1.4.5?
Legacy Fabric publish builds for 1.4.5.