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I installed NPOI from NuGet, version 2.1.3. I want to read encrypted excel file. By this goal according to this thread i need use class EncryptionInfo from namespace NPOI.POIFS.Crypt. But my assembly not contain this namespace.

If you look at the GitHub repository for this library, you will see this namespace in version 2.1.3.

What is my error?

P.S. Sorry for my english language

Roman Yakhmenev
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