Revit Cannot Run External Application APL

October 12, 2023 Heather Volk

When launching Revit in any version the following error appears:

Full details:

Of course, you must have Autodesk Point Layout installed as well. 

Conflicting and / or multiple versions of Point Layout are installed. 

The solution is simple, the latest version of Autodesk Point Layout needs to be installed. Any other versions need to be uninstalled. 

The latest version of “APL” will work for versions 2020 to 2024. 
**Note: Revit 2020 needs to be current on all updates**

About the Author

Heather Volk

Sr. Technical Support Specialist, Building Solutions<br><br>Heather is responsible for responding to customer requests and helping them address technical challenges in a timely manner. She is an experienced Computer Aided Design Manager with a demonstrated history of working in the construction industry. She has strong arts and design professional skills in AutoCAD, plumbing, computer aided design (CAD), project estimation, and facility management, and a history of providing training and technical support.

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