If you have ever worked with Visual Basic for Applications (VBA), written a script in Microsoft Access, or tried to control Excel from another application like AutoCAD or a custom .NET program, you have likely encountered a reference to the Microsoft Office Excel 12.0 Object Library.
Stop searching for “Microsoft Office Excel 12.0 Object Library download.” You won’t find an official one, and unofficial ones are dangerous. Instead, either browse to your existing Office 2007 installation or upgrade your VBA project to use a newer, supported Excel library. microsoft office excel 12.0 object library download
If you have access to an old MSDN subscription (or Visual Studio 2008/2010 installations), the Excel 12.0 type library may be installed as part of the Office Developer Tools. The Complete Guide to the Microsoft Office Excel 12
Microsoft’s official stance is clear: type libraries are only available through Office installation media. Instead, either browse to your existing Office 2007