Cannot load file or Assembly 'Microsoft.Office.Interop.Excel'

Question

I am trying to open an old ASP.NET project on my machine and I am getting the following error when I try to run it to view in the browser:

Server Error in '/' Application.

Configuration Error

Description: An error occurred during the processing of a configuration file required to service this request. Please review the specific error details below and modify your configuration file appropriately. 

Parser Error Message: Could not load file or assembly 'Microsoft.Office.Interop.Excel, Version=12.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c' or one of its dependencies. O sistema não pode encontrar o arquivo especificado.

Source Error: 

Line 8:      <compilation targetFramework="4.0">
Line 9:        <assemblies>
Line 10:         <add assembly="Microsoft.Office.Interop.Excel, Version=12.0.0.0, Culture=neutral, PublicKeyToken=71E9BCE111E9429C"/>
Line 11:         <add assembly="WindowsBase, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
Line 12:         <add assembly="DocumentFormat.OpenXml, Version=2.5.5631.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>

Source File: C:\Users\visualstudio\Downloads\MPN\web.config    Line: 10 

Assembly Load Trace: The following information can be helpful to determine why the assembly 'Microsoft.Office.Interop.Excel, Version=12.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c' could not be loaded.

WRN: Assembly binding logging is turned OFF.
To enable assembly bind failure logging, set the registry value [HKLM\Software\Microsoft\Fusion!EnableLog] (DWORD) to 1.
Note: There is some performance penalty associated with assembly bind failure logging.
To turn this feature off, remove the registry value [HKLM\Software\Microsoft\Fusion!EnableLog].

Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.6.1055.0