Since Office 2007 is no longer sold or supported, consider these safer, modern, and officially portable alternatives: Microsoft Support LibreOffice Portable : A powerful, open-source suite compatible with files. Available for free from PortableApps.com WPS Office
There are several reasons why users might prefer a portable version of Microsoft Office 2007: Microsoft Office 2007 Portable Download
If you have a legitimate copy of Microsoft Office 2007, you can use it on-the-go by: Since Office 2007 is no longer sold or
: A free web-based version of Word, Excel, and PowerPoint accessible via any browser with a Microsoft account. that are missing in newer versions? End of support for Office 2007 - Microsoft Support consider these safer