: It is not available for individual retail purchase.
"Microsoft Visio Portable" typically refers to attempting to run Microsoft Visio as a portable (no-install, on-a-USB) application. Microsoft does not publish an official portable build of Visio. Visio is a licensed, Windows-based diagramming application with dependencies (registry entries, COM components, licensing services, Office integration) that make it unsuitable for true portable packaging without violating licensing or stability.
Enterprises often use App-V to "package" Visio, allowing it to run in a virtual container on managed workstations without a traditional installation process. 3. Portable Alternatives