Portable versions often lack full system integration, such as context menus or the ability to use shared system libraries like .NET Framework.
Install Visio or access Visio for the web - Microsoft Support Microsoft Visio Portable Download
Many “portable Visio” executables contain hidden infostealers that log your keystrokes, capture passwords, and send them to remote servers. Imagine typing your domain admin credentials while using a “portable tool” on a client’s machine. Portable versions often lack full system integration, such
Microsoft now offers a browser-based version of Visio included with (no local install required). You can view and lightly edit .vsdx files in any modern browser—Edge, Chrome, Firefox. It is not a portable EXE, but it is portable in the sense that you only need a login. For heavy editing, a $5/month add-on grants full diagramming. Microsoft now offers a browser-based version of Visio