Excel UDF Output is formatted as stale values

Peter PersisTables 0 Reputation points
2025-01-10T11:10:05.4933333+00:00

I have some C++ UDF developed to extend Excel functionality. With the latest Office365 version I am seeing the results from these UDFs flagged as stale data (strike through formatting). Is there a mechanism for indicating that the results from the UDF are up to date. I know how to disable this new Excel capability but I do see it as valuable for other data so would like to keep it switched on.

I am exposing the UDFs through the xlw 5 toolkit which runs over the xlCall32 dll as the interfacing library.

Thanks for any information you can provide.

Regards
Peter C

Excel
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A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.
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Office Development
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Office: A suite of Microsoft productivity software that supports common business tasks, including word processing, email, presentations, and data management and analysis.Development: The process of researching, productizing, and refining new or existing technologies.
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