For classic desktop applications using COM interoperability:
Microsoft Excel 16.0 Object Library is not a standalone file you download; it is part of the Microsoft Office installation (specifically Office 2016, 2019, 2021, and Microsoft 365) Microsoft Excel 16.0 Object Library Dll Download -
You can install this via NuGet in Visual Studio: Install-Package DocumentFormat.OpenXml Important Safety Information Microsoft Excel 16.0 Object Library Dll Download -
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