
MouseKeyInventoryFix
Fixes the almost ten-year-old issue with mouse key binds not working in inventories.
About this Mod
MouseKeyInventoryFix
Fixes the almost ten-year-old issue with mouse key binds not working in inventories (MC-577).
There are jars for both Fabric and Forge, along with some for specific game versions. Make sure you get the correct one for your mod loader and game version.
Having issues or have questions?
Join my Discord server and ask!
Available Versions
How to Install MouseKeyInventoryFix on Your Server
Order Server
Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).
Set fabric Loader
In the panel under "Egg", select the fabric loader and matching Minecraft version (1.20.4).
Install Mod
Open the mod browser in the dashboard and search for "MouseKeyInventoryFix". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.20.4, 1.20.3, 1.20.2 (+18 more)
Server-side
✗ UnsupportedRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
MouseKeyInventoryFix server crashes on startup – what to do?
Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.20.4). You can switch loaders with one click in the panel.
Is MouseKeyInventoryFix compatible with fabric and forge?
MouseKeyInventoryFix officially supports fabric, forge for Minecraft 1.20.4, 1.20.3, 1.20.2. Note: Forge and Fabric mods are NOT cross-compatible – pick one loader and stick with it. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with MouseKeyInventoryFix – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if MouseKeyInventoryFix consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.
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Install MouseKeyInventoryFix with just one click on your server.
