Excel online Addin+ officeJs + createWorkbook() not accepting .xlsb file format

Shaikh Marjina 1 Reputation point

I am trying to create copy of selected workbook using createWorkbook(); which is not accepting .xlsb file format on excel online.

Error: "This workbook can not be open because file format may not be matching file extension"
It works properly on excel desktop application.

Could someone tell me what I did miss ?

Thanks in advance.

Office Development
Office Development
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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