3ds Max 2025.3 Update Release Notes

Welcome to the 3ds Max 2025.3 Update. You can access the Update from your Autodesk Account.

These release notes describe any known limitations, issues, and fixes included in this release. To learn about the new features and updated workflows, see What's New in 3ds Max 2025.3.

3ds Max 2025 new features and enhancements

3ds Max 2025 system requirements

What's Fixed

Animation
Fixed a rare crash when trying to display the rollouts of these controllers in the motion panel: Euler XYZ, Look At, Scale XYZ, and Local Euler XYZ (Legacy). MAXX-77995
Performing an FBX exporting of a Biped or CAT rig and not baking should no longer incorrectly report the Biped and CAT controllers as unsupported. Also fixed a minor bug where the Biped controller called "Biped SubAnim" was returning a garbage value. Selecting this in the trackview could cause a performance issue trying to plot a curve out to nowhere. MAXX-78243
Fixed a crash in Biped when using copy tracks feature with extra bones present. MAXX-75462
Fixed several issues with Biped's maxscript interface to copy and paste poses/postures/tracks. These should now behave correctly. Ex: "biped.copyposture". MAXX-76319
Fixed several crashes that occurred from Biped's filters and fixers. These are exposed in the Mixer and in Maxscript as "BipFilter" and "BipFixer". MAXX-77763
CAT Motion Editor, Fixed several issues: Globals -> Path Node button. This pick button will now not let you choose a node that is already a part of the rig, or anything attached to the rig. LimbPhases -> Pick Ground button. (Only enabled when there are foot prints to adjust) Various issues likely didn’t allow this feature to work well. It should now properly adjust the foot print nodes like a one-time snap to ground. Fixed a crash when navigating away from the LimbPhases panel. Fixed all of the buttons to open TrackViews. They should all now properly display the desired tracks. MAXX-77658
Fixed a bug in CAT related to custom rigs causing crashes when adding layers. MAXX-56772
Fixed a bug in the Track View that prevented the "(Locked)" text from showing up on locked tracks. MAXX-77129
Resolved a crash with the Skin modifier during the voxel calculations. MAXX-77750
Fixed an issue where CAT rigs were trying to update footprint nodes in the middle of loading scenes with CAT rigs, deleting CAT nodes, or cloning CAT rigs. This caused CAT glitches, extra footprint nodes, and crashes. MAXX-76056
Fixed an issue internal to CAT where when loading scenes, deleting CAT nodes, cloning CAT rigs; CAT was not properly disabling evaluation during these actions causing issues and viewport glitches. MAXX-77700

Core
Added handling of 3DSMAX_DOESEXIST_TEST_FILE_ATTRIBUTE_OFFLINE environment variable. If defined and set to true, the DoesFileExist test does not return false if the file is found but its FILE_ATTRIBUTE_OFFLINE flag is set. This is for better support of distributed file systems. MAXX-78367
Fix maxscript runtime error when running DaylightSystemFactory2.create() MAXX-78330
maxzip now stores file names with forward slashes rather than backwards slashes per zip specification. MAXX-78200
Fixed issue that if unhide multiple layers in Layer Explorer, the hidden state of nodes in those layers and their nested layers were set to unhidden. MAXX-78169
Fixed issue with XForm modifier's transform controller being evaluated too early when loading scene file. MAXX-77915
The new menu APIs created in 3ds Max 2025 are now exposed through the .NET wrapper MAXX-77924

MAXScript
Added internalCategory keyword arg to macros.new MAXX-77716

Modeling
Corrected an issue with the Edit Poly modifier that could cause SAVE to take longer than expected. MAXX-78352
Corrected an issue where in very rare circumstances geometry data loaded in from 3ds Max 2021 thru 2023 that uses a weld operation (such as the Symmetry modifier) could appear corrupted when loaded in 3ds Max 2025. MAXX-76267
Resolved an issue where you were not able to use a true black color value for the Hard Edges Display in the Editable Poly object or Edit Poly modifier. MAXX-78178
When opening a 3ds Max scene where the "Display Hard Edges" option has been toggled ON with the Editable Poly object or the Edit Poly modifier was saved with the file, the display of the hard edges will now be correctly ON by default when the scene loads. MAXX-78177
Boolean Modifier icons should no longer disappear from the UI after performing an action such as Extract Operand. MAXX-76460

Particle Flow
Fixed a bug in Particle Flow around some operators referencing scene nodes that change from meshes to something else like a shape in their modifier stacks. PFlow was crashing attempting to handle the object as a mesh when it wasn't anymore.
MAXX-36783

Python
OpenColorIO diagnostic info not set to stdout when core.dll is loaded outside of max.
MAXX-75551

Viewports
Fixed issue where ghosting could appear when toggling Show Safe Frames in the viewport MAXX-76711
Performance issue while navigating when the cursor is on the model MAXX-78487

Known Issues and Workarounds

Viewports
The viewport gradient is not reset as expected if the background color has been changed (e.g., color or environment map). MAXX-77836 Workaround: Reset again.

Viewport Canvas
OCIO-based color-management modes do not get restored automatically after using the Viewport Canvas to paint. MAXX-78505 Workaround: Manually restore OCIO mode in the Color Management settings.