Nov 24, 2025 – Autodesk released Autodesk Revit Interoperability 2026.4 Update.
The Autodesk Revit Interoperability 2026.4 Update is available via the Autodesk Access app or via download from the Autodesk subscription site.
The update requires access to the original install resources.
The Revit Interoperability 2026.4 Update does not support uninstall.
Once Revit Interoperability 2026.4 Update is applied Revit 2026 cannot be reverted to its pre-update state.
The official release date was Nov 23, 2025.
Revit Interoperability 2026.4 Update
The Revit Interoperability 2026.4 Update in a major Revit Core engine update. This update appears to update the Interoperability components for Revit beyond the previously released Revit 2026.4 Update from earlier in the month. This update checks for the earlier Revit 2026.4 Update install and applies some changes.
See the Revit Interoperability 2026.4 Update release page.
Software Included
- ADP Desktop SDK - version 5.5.54.0
- FormIt Converter For Revit 2026 - version 26.4.0.32
- Generative Design For Revit - version 26.5.6.0
- Interoperability Engine Manager - version 1.3.2.2
- IFC Parameters for Revit 2026 - version 26.4.0.32
- Personal Accelerator for Revit 2026 - version 24.4.40.0
- Core Package - Component for Revit 2026 - version 26.4.0.32
- Core Package - ATF for Revit 2026 - version 26.4.0.32
- Core Package - Cloud for Revit 2026 - version 26.4.0.32
- Core Package Component Shared for Revit 2026 - version 26.4.0.32
- Dynamo Core for Revit 2026 - version 26.4.0.32
- Dynamo Docs - version 26.4.0.32
- Core Package - RVT Component for Revit 2026 - version 26.4.0.32
- TwinMotion Package Component for Revit 2026 - version 26.4.0.32
- Unit Schemas for Revit 2026 - version 26.4.0.32
- Product Feedback for Revit 2026 - version 26.4.0.32
- Carbon Insights for Revit 2026 - version 26.4.0.32
Enhancements
Content
- Updated 3 existing families and added 4 new families in the US Imperial library residential content.
Design Option
- Fixed an issue that prevented editing callout profile sketches while editing a design option.
Dynamo for Revit
- Upgraded Dynamo Core version to 3.6.1. See the release notes for details.
Fabrication - MEP
- Improved the change service functionality of fabrication parts.
Graphics - Accelerated Views
- Added the ability to display image background in Accelerated Views.
Manage Links UI
- Added the ability to change the path type and reference type after selecting multiple links in the Manage Links dialog.
Twinmotion
- Updated Datasmith Exporter to the latest available version.
- Added the ability to use the preferred Twinmotion version.
- Added the ability to export to Datasmith format even if Twinmotion is not installed.
Fixed Issues
General
- Addressed potential security vulnerabilities.
Assembly
- Fixed an issue in which models cannot be upgraded with inconsistent centerline assemblies.
Design Option
- Fixed an issue that prevented view-specific family instances from displaying while being added to a view that is not using the active design option.
- Allowed aligning and offsetting detail lines while in a design option.
- Fixed wall type preview while editing a design option.
FormIt Converter
- Resolved instabilities when cancelling opening models.
Graphics
- Resolved an issue where highlighting link instances doesn't display correctly in accelerated views.
- Fixed an issue in accelerated views where surface patterns applied to Revit elements did not update when the element is moved until the view was updated.
IFC
- Fixed an issue where some grouped elements in assemblies were not positioned correctly when exporting to IFC.
Link - Bind
- Improved stability when opening the Manage Links dialog using a Revit Server model.
Manage Links
- Fixed an issue where links from the previously opened model were listed in the new Manage Links dialog.
Materials
- Fixed an issue where the paths of material textures stored on Autodesk Docs would break after multiple users had worked on the same material through worksharing.
MEP Duct
- Fixed a stability issue when one MEP static variable is released during the Revit exit process.
MEP Duct/Pipe Pressure Loss Calculations
- Fixed a stability issue where the integer-type formula parameters based on duct or pipe family connector flow might throw internal exceptions.
- Fixed an issue that caused an incorrect value for the Flow Characteristic parameter on Analytical Duct Segments.
- Fixed an issue where Raster Images in background behind a floor would incorrectly show through non-masking filled regions in vector print and PDF Export and not match the screen.
Reinforcement
- Improved stability when clicking bars in a rebar set multiple times while splitting.
Revit Cloud Worksharing
- Improved resiliency for cloud worksharing analytics requests.
Stair
- Improved stability of some models with stairs.
Twinmotion
- Fixed an issue regarding untranslated strings related to Twinmotion Substitution feature.
UI Frameworks
- Improved stability when editing text using the in-canvas controls.
- Improved stability when working with the Account Details dialog.