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Meta XR MR Utility Kit (UPM)
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Updated: Feb 10, 2026|
MRUK provides a rich set of utilities/tools on top of Scene API to perform common operations when building spatially-aware apps. This makes it quick and easy to program against the physical world and allows the developer to focus on what differentiates their app. Version
85.0
Version 85.0 Release Notes
MRUK provides a rich set of utilities/tools on top of Scene API to perform common operations when building spatially-aware apps. This makes it quick and easy to program against the physical world and allows the developer to focus on what differentiates their app.
What's New
What's New
New feature: Sceneless World Locking. When World Locking is enabled, a scene is no longer required to be present.
New feature: Spatial Test Framework provides automated testing capabilities for validating spatial-dependent functionality across multiple room configurations. This framework enables developers to ensure robust behavior of mixed reality features across different physical environments by running tests against various room layouts automatically. More information at : https://developers.meta.com/horizon/documentation/unity/unity-mr-utility-kit-debug/#mruk-spatial-testing
What's Fixed
What's Fixed
Fixed a crash when stopping the editor over Link.
Fixed an issue where some shaders would sometimes spam errors in the console on certain Unity versions.
Fixed some initialization issues with AnchorPrefabSpawner, SceneNavigation and SpaceMapGPU components.
Fixed a bug where if the room gameobjects would be destroyed (for example when loading a new scene) the MRUK internal state would sometimes not be synchronized.
Improvements
Improvements
Immersive debugger now more accurately displays surfaces.
Virtual reality / Meta Horizon
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Virtual reality / Meta Horizon
Support and legal
Virtual reality / Meta Horizon
Support and legal
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