For the user in 2003 or 2004, plugging a USB 2.0 flash drive (a luxurious 256 MB model) into a university library’s public terminal or a cybercafe’s locked-down PC was an act of quiet rebellion. Where the local administrator had stripped away Microsoft Works or installed only a read-only Office Viewer, the portable suite offered full editing capability. Students could write essays on a home PC, save to the drive, and then continue editing on any Windows 98/2000/XP machine without leaving traces on the host computer. IT workers carried it as a Swiss Army knife to open corrupt .doc files on servers without installing software.

Legacy Windows Portable Apps - Portable Microsoft Office 2000

Microsoft Office 2000 was never officially released as a "portable" application by Microsoft. Any "portable" versions found online are typically unofficial, modified packages (often created using virtualization tools like ThinApp or VMware) that allow the legacy suite to run from a USB drive without a standard installation. Key Insights from User Reviews & Community Use

Here is the guide covering the history, the risks, and the technical setup.