The openXMLImportExcel doesn't work on students computer

[manishpaulsimonTV4Y5]

Hi,
A student of mine has the following issue:

“Object Reference not set to an instance of an object”

She’s using Dynamo 3.2 and Revit 2025.3

Any tips on how to solve this issue?

She doesn’t have excel installed on her computer too. Maybe this is the reason?

Thanks

[jacob.small]

No excel needed - remove all Revit add-ins and packages from Dynamo, and see if that fixes the issue.

[aaron_rumple]

The most obvious thing to check - is it “Sheet 1” or “Sheet1”? Excel defaults to “Sheet1”.