OrcaSlicer 2.4.0 Ships With Orca Cloud Fixes and Packaged 3MF Jobs

A steadier Orca Cloud

OrcaSlicer 2.4.0 is out, and the headline work is behind the scenes rather than flashy. The team spent this cycle smoothing out Orca Cloud, the sync service that holds your custom presets and printer profiles.

The most annoying bug is gone: you no longer get logged out the moment your network blips at startup. Session data is now stored locally in your system keystore, so you can keep slicing and your profiles stay available even when you are offline.

Send jobs as a packaged 3MF

There is a new per-printer toggle called "Use 3MF instead of G-code." Flip it on and Orca sends the sliced job as a packaged .gcode.3mf file instead of a plain .gcode, with slice metadata tied to the object labels in the file. It is export only, so it will not trigger a re-slice, and the setting sticks with the printer preset.

Windows users get a Store option

OrcaSlicer now ships a Microsoft Store MSIX package as a new Windows install channel. The big win is for Windows 11 users under Smart App Control, which otherwise blocks the unsigned GitHub installer. The Store handles signing for you. The submission is still in Microsoft's review queue, so it is not live yet, but the classic installer and portable builds work as always.

Smaller quality-of-life fixes

The filament list got some love. A count badge shows how many profiles you have, the list auto-scrolls to the end when you add or delete one, and it unfolds automatically so you can see the change. Slice-to-preview is faster too, with the largest gains on Klipper-flavored printers, and the skirt generation got an overhaul.

This build also folds in everything from the 2.4.0 alpha and beta: Z Anti-Aliasing contouring, Machine Input Shaping, Optimized Gyroid infill, a redesigned printer selection dialog, Realistic View rendering, a bridging overhaul, expanded per-feature filament assignment, a Troubleshoot Center, native Moonraker and 3DPrinterOS hosts, and Creality K-series support.

The bottom line

OrcaSlicer stays free and open source, and 2.4.0 is a classic maintenance release that makes daily use less frustrating. If cloud logouts or slow previews have been nagging you, this update is worth the download.