Download Microsoft.office.interop.excel.dll Version 15.0.0.0 [extra Quality] Today

in the reference properties if the target machine does not have the Office Primary Interop Assemblies (PIAs) installed. Stack Overflow Are you running into a "Could not load file or assembly" error, or are you setting up a new development environment Could not load file or assembly 'Office, Version=15.0.0.0'

If you have a legitimate copy of Office 2013 installed on a development machine:

If you absolutely need , follow this safe plan: download microsoft.office.interop.excel.dll version 15.0.0.0

: Version 15.0.0.0 is specifically for Excel 2013. While it may work with newer versions of Excel (due to backward compatibility), it will fail if the client only has older versions (e.g., Excel 2010) installed.

Install the Office 2013 Redistributable Primary Interop AssembliesMicrosoft provides a formal installer for these assemblies. Navigate to the official Microsoft Download Center. in the reference properties if the target machine

: If you are deploying to a client machine, install the Microsoft Office 2013 Primary Interop Assemblies Redistributable (though Microsoft now recommends embedding interop types instead). 2. Implementation & Usage

Ensure the feature is enabled:

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