: Always use official channels to purchase software or retrieve product keys.

: Without a valid product key, the software enters "Reduced Functionality mode" after 25 launches, acting only as a file viewer where you cannot save or create new documents. Microsoft Support Risks of Using Office 2007 End of support for Office 2007 - Microsoft Support

If you absolutely need Office 2007 for compatibility with legacy files or your organization’s old templates, here are legal methods:

To create a post that is helpful and safe for your audience regarding Microsoft Office 2007, it is important to focus on and the current security risks of using this software. Microsoft ended support for Office 2007 on October 10, 2017, meaning it no longer receives security updates or technical support.