Hey all, If anyone can help me with my issue, this would be great. this issue is driving me crazy. I want to export some things to a predefined excel, overwriting some sheets. problem is: The openXMLExportExcel is not outputting with this error: Data.OpenXMLExportExcel operation failed. Common L…

Hi, It’s probably a library conflict with another add-in or Dynamo package. Try disabling the add-ins and retesting. If it fails again, try removing the Dynamo packages. Another workaround is to use Python with the OpenPyXL library. [image] Dynamo Version 3 Excel Export R…

you are right, with no add-ins and packages loaded it works

Hi @dick.elsman_infranea Would you share the list of packages you were using so that we can reproduce this bug? Our team would like to improve this experience when such error happens

Hey @Aaron_Tang , The problem is with an in-house built package as we are using ClosedXML which makes use of OpenXML library. I do think it is weird that, since this is all lazy-load, this kind of conflict can occur. If you want to have it, I am happy to share it in a DM, but not as a downloadabl…

OpenXML Export does not work: Data.OpenXMLExportExcel operation failed. Common Language Runtime detected an invalid program

Revit

EzDoesIt January 8, 2026, 4:14pm 5

I know Archi-lab is one

Topic		Replies	Views
Data.OpenXMLExportExcel is throwing errors overnight Revit revit , excel , dynamo	6	295	May 25, 2025
Data.ExportExcel Revit revit , excel , dynamo	3	4179	April 24, 2023
Problem with export from Revit to Excel with Dynamo Revit excel , dynamo	1	2319	August 14, 2017
Open XML Export to Excel Node Revit excel , export	9	268	January 7, 2025
Data.OpenXMLExportExcel node not working Packages	5	101	July 21, 2026

OpenXML Export does not work: Data.OpenXMLExportExcel operation failed. Common Language Runtime detected an invalid program

Related topics