Microsoft Flight Simulator 2024 DevAlpha

The Microsoft Flight Simulator 2024 Developer Alpha (Dev Alpha) is now scheduled to begin on Wednesday, Oct. 23.

We’re delaying the Dev Alpha to fix two significant crashes in the current Dev Alpha build.

Please note participation in the Dev Alpha is for official Marketplace partners only, and those eligible to participate will be notified today via email. On Wednesday when the Dev Alpha begins, eligible participants will receive another email with instructions on how to participate.

In the interim, we welcome all developers to review the Microsoft Flight Simulator 2024 SDK and its documentation (now available from the links below) and learn more about the changes to the sim.

Online Documentation
SDK Core Installer
SDK Samples Installer
SDK Wwise Installer
SDK Da62 Installer
SDK Cabri G2 Installer

Thank you for your patience!

-The Microsoft Flight Simulator Team

7 Likes

Hello everyone,

If you have issues with 3DSMax plugin multi exporter buttons not being responsive. (Export buttons doing nothing for example),
please redownload and reinstall the SDK Core.
We had CDN cache clearing issues that could led to people downloading an older version of the installer.

Regards,
Sylvain

2 Likes

1.0.77.0 Release Notes

General bugfix

  • Fixed some sound issues:
    • GroundVehicles couldn’t play sound
    • Airplanes don’t play sound if there are in SLEEP mode such as MSFS2020
    • sound.cfg were wrongly read
  • Fixed random crashes when launching a flight with an aircraft that uses XML gauges

DevMode

General

  • Fixed “Build All” not changing packages to Edited which was inconsistent with other build buttons, and packages were not mounted on game restart.
  • Fixed Flight Simulator 2020 bounding boxes being wrongfully corrected to better fit the content (matching computation of Flight Simulator 2024 content).
    This created LOD issues with packages from Flight Simulator 2020.
    Packages from Flight Simulator 2024 are not affected.

Navigation Graph Editor

  • Fixed “Move Camera To node” teleporting us at the edge of the world
  • Fixed Clicking “File > Reload from Files” causing a dot icon to appear, as if a value has been modified
  • Fixed possible crash on opening the editor

Project Editor

  • Removed 11 characters limitation in Release Note fields. This new limitation is now 4000 characters

Scenery Editor

  • Fixed an issue where terraforming polygons would have an incorrect falloff distance when converted from FS2020
  • Fixed light update of painted lines
  • Fixed ground merging on projected meshes

SimObject Editor

  • Removed useless parameter “ClipMode”
  • Updated parameters
  • Now reorder indexed sections by index on save if they have been modified
  • Fixed settings not correctly loaded the first time
  • Fixed electrical debug not correctly displayed
  • Fixed param not correctly removed from the file after an undo
  • Fixed crash when creating MdArray by hand
  • Improved undo redo while editing a parameter
  • Disabled validation errors by default, it can be activated in Edit / Highlight Potential Errors

SDK

General

  • Fixed FS2020 packages lights intensities

WASM API

  • Fixed simvar “CAMERA STATE” values
  • Fixed an issue blocking reloading of dirty wasm on rebuild or restart
  • Fixed exception in wasm function gauge_calculator_code_precompile

Tools

  • Blender:
    • Fixed “.xml” that have empty names
    • Fixed not exporting relative path for objects
    • Added a way to copy textures in the right folder at the end of the export (never use the converting system from Khronos)
    • Generate texture lib depending on keep original
  • 3DSMax:
    • Fixed export texture
    • Fixed Save/import configuration for all present presets in .mep file
    • Cleaned menu “create animation group from selected”
    • Added a way to convert scene from MSFS2020 to MSFS2024 with “Scene > Convert To MSFS2020” Option
    • Added log to warn using MSFS2020 objects

Documentation

  • Documentation updated to v0.9.3 (see documentation for full changelist)

World

  • Fixed an issue where custom aerials were not showing in photogrammetry areas

Vegetation

Fixed a case where a polygon with high vegetation density in FS2020 would become almost 0 in FS2024

6 Likes

1.0.84.0 Release Notes

Note: SDK links updated in the head post

General bugfix

  • Fixed potential failure when creating aircraft which could lead to infinite loadings

DevMode

Scenery Editor

  • Fixed crash when editing several decals in SPC
  • Fixed scenery objects (decals/scenery/simobjects/etc) multi edit not working properly
  • Fixed no reload of scenery objects when editing several at once.

SimObject Editor

  • Removed unwanted required condition in flight model
  • Fixed some bugs about Career Compatibility tab:
    • Some constraints are now longer whitespace dependent
    • Tag count in navigation graph were wrongly computed if the node was in a subgraph referenced by name
  • Fixed parameters reported as missing, even when manually added to cfg
  • Fixed resync done before save when showing the validation error dialog

SDK

General

  • Fixed Wasm Platform Toolset - Gauge&System templates creation
  • Fixed not working text and .png images for XML Gauges

SimConnect

  • Fixed a crash while requesting unknown NavData

WASM API

  • Added fsPlannedRoute API to WASM to manage interacting with the player flight plan route

Tools

  • 3DS max:
    • Write textures by copying them and fix gltf after exporting them
  • Blender:
    • Fix “images is None”
    • Fix force set detail normal scale
    • Fix Unlink/link blendmask texture
    • Fix write textures
    • Fix export Detail map
    • Fix reload LODs removing the old group lods when needed
    • Fix textureConfigs referenced before assignment when gltf parsing fails.
    • Fix error log “Same Image name for different config”
  • Simplygon bugfixes and presets adjustments.
7 Likes

1.0.86.0 Release Notes

General bugfix

  • Adaptive detail LOD factor does not affect User aircraft anymore
  • Fixed random freezes & deadlocks with WASM-based aircraft
  • Fixed free flight mid-air spawning altitude
  • Fixed infinite loading if favorite aircraft cannot be loaded

DevMode

Scenery Editor

  • Fixed secondary heightmap exclusion not applied on crop lines
  • Fixed backward compatibility with light preset intensity

SimObject Editor

  • Added target_specializations as a constraint which is shown in the output of the Career Compatibility Tab
  • Changed the way tailwheel is computed in the Career Compatibility Tab
  • Fixed PackageAnalyzer Payload computation : max_zero_fuel_weight was not converted to the right unit

SDK

General

  • Added LodProcessingPresets folder to SDK core to work with Simplygon

SimConnect

  • Fixed system event Pause_EX1 which was sent with no value

Tools

  • 3dsmax
    • Fix flags in texture tool
    • Fix “Export All” for presets
  • Blender
    • Fix reload lods for collections
    • Add flags edition to texture
    • Update documentation
    • Fix not upgrading scene if addon of MSFS2020 is activated
    • Fix lights rotation
    • Add “Convert scene to MSFS2024” option in toolbar
    • Fix remove color attributes on all mesh primitives when needed
  • Update documentation and description for “Convert scene to MSFS2024” option
1 Like

1.0.87.0 Release Notes

General bugfix

  • Fixed Aircraft Selector/Configurator Variation/Livery handling for MSFS 2020 packages

DevMode

Scenery Editor

  • Fixed projected mesh size not taken into account for mip streaming causing blurry projected meshes.

SDK

SimVars

  • Fixed “SIMULATION TIME” environment variable returning inconsistent values when switching from/to avatar mode

Aircraft

  • Fixed XML gauges not working after first flight.
  • Fixed bitmaps not working anymore in XML gauges
  • Hide avatar in aircraft if it’s not edited for 2024 pilot system

Aircraft Core System

Failure / Wear & Tear

  • The Wear&Tear system is now deactivated on 2020 aircraft

1.0.88.0 Release Notes

General bugfix

  • Overall stability fixes