2025.4.3 Update
The Revit LT 2025 updates are cumulative and include all changes from previously released Revit LT 2025 updates.
Release Date: August 26, 2025
After this update is applied successfully, the build number specified on the Help > About dialog will be:
- 25.4.30.30
- 20250815_1515(x64)
- 2025.4.3
| Software embedded in the update executable: |
| Core Package - Component for Revit LT 2025 - version 25.4.30.30 |
| Core Package - ATF for Revit LT 2025 - version 25.4.30.30 |
| Core Package - Cloud for Revit LT 2025 - version 25.4.30.30 |
| Core Package - CefSharp for Revit LT 2025 - version 25.4.30.30 |
| Cloud Models for Revit LT 2025 - version 25.4.30.30 |
| Unit Schemas for Revit LT 2025 - version 25.4.30.30 |
| Product Feedback for Revit LT 2025 - version 25.4.30.30 |
| Personal Accelerator for Revit LT 2025 - version 24.4.21.0 |
| ADP Desktop SDK - version 5.5.54.0 |
| Important Notes - Installation |
| The Revit LT 2025.4.3 Update does not support uninstall. Once the Revit LT 2025.4.3 Update is applied, Revit LT 2025 cannot be reverted to its pre-update state. |
Issues Resolved
| General |
| Addressed potential RFA Out-of-Bounds Read Vulnerability in Autodesk Revit. More details. |
| Addressed PDF File Parsing Vulnerabilities. More details. |
| Coordination Model |
| Fixed a Coordination Model changes processing glitch and potential unexpected close of Revit that could occur when working with the same Coordination Model in two Revit sessions side-by-side or in two Revit projects in the same Revit session. |
| Improved the numbers reporting for modified and deleted elements in Coordination Model Changes. |
| Import/Export Data Exchange |
| Resolved an issue affecting the placement and scaling of certain objects linked into Revit via the Data Exchange Connector for Revit. |
| Export DWG/DXF |
| Fixed an issue where hatches were exported incorrectly to CAD formats if the patterned elements were transparent in the Revit view. |
| Parameters |
| Corrected editing of the "Tilt Angle" within the type editor on objects such as lighting fixtures. |
| Properties Dialog |
| Added a new option in Revit.ini "DisableParamSortInMPPAndEditTypeDialog" in section "UserInterface" which sorts parameters in the order of creation, to match the behavior in earlier releases. |
| Stair |
| Fixed an undefined behavior when the cut plane level is equal to the height of the top nosing (tread). |
| User Interface |
| Fixed an issue that Revit UI became unresponsive in some cases with Windows 11. |
