2026.5.1 Update
The Revit 2026 updates are cumulative and include all changes from previously released Revit 2026 updates.
You can download the Autodesk Revit 2026.5.1 update from Autodesk Account or download and install automatically from the Autodesk Access.
Release Date: October 27, 2026
After this update is applied successfully, the build information specified on the Help > About dialog will be:
- 26.5.10.38
- 20261015_1515(x64)
- 2026.5.1
| Software embedded in the update executable: |
| Microsoft ASP.NET Core Runtime 10.0.10 (x64) - version 10.0.10.36226 |
| .NET Windows Desktop Runtime 10.0.10 (x64) - version 10.0.10.50000 |
| Microsoft Visual C++ 2015-2022 Redistributable (x64) - version 14.50.35719.0 |
| Microsoft Visual C++ 2015-2022 Redistributable (x86) - version 14.40.33810.0 |
| Microsoft Edge WebView2 Runtime Installer - version 1.3.211.7 |
| ADP Desktop SDK - version 7.0.14.0 |
| Autodesk Shared Components 2026.8 - version 1.12.0.3 |
| Autodesk CER Service - version 7.2.5.982 |
| RealDWG Shared 2026 - version 25.1.179.0 |
| FormIt Converter For Revit 2026 - version 26.5.10.38 |
| Generative Design For Revit - version 26.6.3.0 |
| Interoperability Engine Manager - version 1.3.2.2 |
| IFC Parameters for Revit 2026 - version 26.5.10.38 |
| Personal Accelerator for Revit 2026 - version 24.4.56.0 |
| Addins Manager for Revit 2026 - version 26.5.10.38 |
| Batch Print for Revit 2026 - version 26.5.10.38 |
| Core Package Component for Revit 2026 - version 26.5.10.38 |
| Core Package Component ATF for Revit 2026 - version 26.5.10.38 |
| Core Package Component Cloud for Revit 2026 - version 26.5.10.38 |
| Core Package Component Shared for Revit 2026 - version 26.5.10.38 |
| Dynamo Core for Revit 2026 - version 26.5.10.38 |
| Dynamo Docs - version 26.5.10.38 |
| Core Package - RVT Component for Revit 2026 - version 26.5.10.38 |
| TwinMotion Package Component for Revit 2026 - version 26.5.10.38 |
| Autodesk Results Explorer Manager - version 26.0.2.12048 |
| Autodesk REX Framework - version 26.0.2.12048 |
| Autodesk REX Revit - version 26.0.2.12048 |
| Autodesk RSA Common Data - version 26.0.2.12048 |
| Autodesk RSA COM - version 26.0.2.12048 |
| Autodesk RoReinf - version 26.0.2.12057 |
| Product Feedback for Revit 2026 - version 26.5.10.38 |
| Carbon Insights for Revit 2026 - version 26.5.10.38 |
| Worksharing Monitor for Revit 2026 - version 26.5.10.38 |
| Geospatial Coordinate Systems - version 15.1.44.0 |
Issues Resolved
| General |
| Addressed potential security vulnerabilities. |
| API |
| Improved model upgrade reliability to prevent some Revit 2024 models from incorrectly reporting file corruption when opened in newer versions of Revit. |
| Advance Steel Extension |
| Fixed an issue in which the Force/Moment values from analysis results did not populate the Code Checking module in Steel Connections. |
| Copy-Cut-Paste |
| Fixed a performance issue where copying many in-place elements could take hours. |
| Electrical Circuits |
| Improved performance when editing circuits on models with large electrical systems. Previously, clicking Edit Circuit could take up to a minute because the distance to each candidate panel was recalculated repeatedly while sorting the panel list. |
| Export PDF |
| Fixed an issue where Revit became unresponsive when exporting to PDF with the Export in Background option enabled. |
| File Open/Save Internals |
| Addressed potential security vulnerabilities when opening Revit files. |
| Improved stability on document open when a third-party addon creates a dockable panel but fails to initialize it properly. |
| FormIt Converter |
| Restored the Edit in FormIt button for FormIt links. |
| IFC |
| Fixed an issue that prevented IFC exports to network folders. |
| Improved Revit stability when opening/importing a malformed IFC file containing cyclic placement relationships. |
| Fixed color export in IFC 4 Reference View. |
| Import/Export Data Exchange |
| Fixed an issue so that parameters from Data Exchanges created outside of the US are accessible. |
| Fixed an issue where loading Data Exchanges with certain types of parameters would fail. |
| Fixed an issue where custom properties from the Parameters Service were not loaded in Revit for non-US region hubs. Regional server routing now works correctly, ensuring all custom properties appear as expected. |
| Fixed an issue where room geometry failed to load when opening a Revit 2026 exchange containing rooms. Room geometry now loads correctly across versions. |
| Import/Export/Link STL/OBJ/STEP |
| Fixed an issue that prevented STEP files on Desktop Connector from being linked into Revit. |
| Improved stability when importing OBJ/STL files with small geometric details. |
| MEP Fabrication |
| Fixed an issue where Route and Fill checked out extra elements after the command finished. |
| Fixed an issue introduced in Revit 2026 where pattern 866 straight lengths could be calculated incorrectly when using connector adjustments in specific configurations. |
| Pipe |
| Improved stability when modifying the system after starting the Pipe command. |
| Print |
| Fixed an issue in views using MEP Hidden lines where the outer line of the duct/pipe/wire was missing in vector print/export when it was a parallel edge to a second duct/pipe/wire at another height inside the set gap distance. |
| Project Browser |
| Fixed an issue that caused the Project Browser to become unresponsive when dragging views onto sheets. |
| Revit Cloud Worksharing |
| Fixed a permission issue that could occur when opening a Revit Cloud Model in Forma Data Management. |
| Improved resiliency of the Sync with Central and Model Open dialogs. |
| Fixed an issue where Synchronize with Central failed for a cloud model that had been restored to a previous version. |
| Roombook |
| Improved stability when calculating and adding areas within Areabook. |
| Selection |
| Fixed an issue where the FilteredElementCollector API could cause Revit to close unexpectedly when collecting elements from a linked model that was not visible in the specified view. |
| Startup/Shutdown |
| Improved stability on Revit startup. |
| System Zones |
| Fixed an issue that caused a system-zone to be deleted if an assigned space is deleted. |
Important Notes
| Uninstall |
| Revit 2026.5.1 introduces updates based on .NET 10, which may cause compatibility issues with other products and addons. "Roombook/Areabook/Buildingbook for Revit 2026" and "Revit Admin Add-Ins Manager 2026" needs to be updated to "Roombook/Areabook/Buildingbook for Revit 2026.5" and "Revit Admin Add-Ins Manager 2026.5" to functioning properly. These addons can be downloaded from Autodesk Account. |
| For more information about the .NET 10 update, please see What you need to know about Microsoft .NET 10 updates. |
| For more information about the .NET 10 update for developers, please see this blog post. |
| The Revit 2026.5.1 Update does not support uninstall. Once Revit 2026.5.1 Update is applied Revit 2026 cannot be reverted to its pre-update state. |
| Installing this update from an outdated version of Autodesk Access may cause Revit to become unresponsive at 97%. When this occurs, the Revit Update components are fully installed but the update process does not complete. If you encounter this problem, restart the workstation, update Autodesk Access, and run the Revit Update again. You can obtain the latest version of Access from: https://www.autodesk.com/products/autodesk-access/overview |
