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Unable to load .xlsm file in .Net Standard 2.0 Project with Exception - Invalid or unrecognized file format. (Parameter 'stream')
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Trying to load a xlsm file in the workbook using --> 

Workbook.Load(fileStream);

Getting an exception - Invalid or unrecognized file format. (Parameter 'stream')

This is a dot net standard 2.0 project. The same line of code works fine in a .net framework 4.6 project. 

Any ideas on what can be the issue ?

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