You have a script in PowerShell, Python (via win32com), or C# that explicitly calls for the Excel 12.0 ProgID (Excel.Application.12). Modern versions of Excel use Excel.Application.16, but legacy code may be hard-coded to version 12.
Check if Office 2007 is installed on your system:
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. microsoft office excel 12.0 object library download
If you already have Excel 2007 installed but VBA says the reference is missing:
VBA will now resolve the reference.
You do not need to install the entire Office 2007 suite. During a custom installation:
This will place EXCEL12.OLB typically in:
C:\Program Files (x86)\Microsoft Office\Office12\ You have a script in PowerShell, Python (via
If you are a developer or a power user trying to automate Excel tasks using VBA, VB6, or .NET, you may have encountered a specific requirement: the need for the Microsoft Office Excel 12.0 Object Library.
A common point of confusion is the search for a standalone "download" link for this specific file. This article explains what this library is, why you likely cannot download it in isolation, and how to correctly obtain and reference it for your projects. If you already have Excel 2007 installed but
Solution: Ensure Excel 2007 is installed and launch it at least once to complete first-run registration.