2024.3.4 Update

The Revit 2024 updates are cumulative and include all changes from previously released Revit 2024 updates.

Release Date: October 2, 2025

After this update is applied successfully, the build number specified on the Help > About dialog will be:

Software embedded in the update executable:
Revit 2024.3.4 Update - version 24.3.40.26
Core Package Component for Revit 2024 - version 24.3.40.26
Core Package Component - Cloud for Revit 2024 - version 24.3.40.26
Core Package Component - ATF for Revit 2024 - version 24.3.40.26
Core Package Component - CefSharp for Revit 2024 - version 24.3.40.26
Revit Unit Schemas 2024 - version 24.3.40.26
Cloud Models for Revit 2024 - version 24.3.40.26
Generative Design for Revit - version 24.11.9.0
FormIt Converter for Revit 2024 - version 24.3.40.26
Carbon Insights for Revit 2024 - version 24.3.40.26
Personal Accelerator for Revit - version 24.4.21.0
Open Studio for Revit - version 1.1.9

Issues Resolved

General
Addressed potential RFA Out-of-Bounds Read Vulnerability. More details.
Addressed PDF File Parsing Vulnerabilities. More details.
Addressed RFA File Parsing Vulnerability. More details.
Parameters
Corrected editing of the "Tilt Angle" within the type editor on objects such as lighting fixtures.
Improved stability when deleting project parameters.
Revit Cloud Model (workshared)
Fixed an issue with the Revit Link API to ensure cloud models initiated via API can be published as expected.
Stair
Fixed an undefined behavior when the cut plane level is equal to the height of the top nosing (tread).
Steel Connections
Resolved instabilities when opening corrupted models.
Twinmotion
Resolved an issue where some objects are either misplaced or disappeared after syncing the Revit files and switches to Twinmotion.
User Interface
Fixed an issue that Revit UI became unresponsive in some cases with Windows 11.

Important Notes

Installation Notes
Revit 2024.3.4 Update does not support uninstall, once Revit 2024.3.4 Update is applied Revit 2024 can not be reverted to its pre-update state.