Custom XML Package Causing 17% Load Freeze

[MSFS 2024] Bug Reports
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1

Version: All (even SU2 and live version)
Frequency: Consistently
Severity: Blocker

Bug description:
I’m working on a custom package that replaces some core-level XML files from a base sim package (fs-base-*). The modifications are applied through the standard SDK workflow, and the package is built specifically for Marketplace deployment using the latest tools. There are no errors reported during export.

The package works flawlessly when placed inside the Community folder — the sim loads and runs as expected.

However, when submitted via Draft Repo or Pre-release, and enabled through the content manager, MSFS 2024 freezes at exactly 17% during startup. The entire loading screen freezes, including the background video and the spinning icon, and the simulator must be closed forcibly (even XBOX).

What has been tested:

  • Using and not using PackageOrderHint
  • Using GloballyOverridenBaseSimFiles with both filenames and full paths
  • Clean boot with deleted Community and StreamedPackages folders
  • Starting the sim in Safe Mode (which loads successfully)
  • Enabling the package through My Library, exiting, and restarting → freeze
  • Removing the package → sim starts normally again

This issue does not reproduce on Microsoft’s side, but happens consistently in my environment (including on multiple test accounts)

1 Like
2

Hello @LinkAviator,

Can you generate a dump file when the loading start to freeze ?

You can open the task manager, search for flightsimulator2024 process and right click on it. Then choose “Create memory dump file”
image

See 3) Provide Private Content to see how to send us the file.

Regards,
Boris

3

Hi,
I have looked at it and it seems stuck when it tries to read biome xml files. The biome system doesn’t support package streaming yet. It needs to be fixed.

Regards,
Xavier / Asobo

1 Like
4

Hello, Xavier
Do you happen to know if there is an estimated timeline for when the biome system will support package streaming? Maybe with SU2?

Any guidance you can provide on how to move forward in the meantime would be greatly appreciated.

5

Sorry I can’t give you a timeline. The biome system needs some changes so it will not be ready for SU2.
I have no workaround for you, your package will only work on the community folder.

Regards,
Xavier / Asobo

6

Any update on these? I cannot upload my package on MarketPlace because of this.

1 Like
7

This is fixed with SU3

Regards,
Sylvain

1 Like
8

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