Visio 2013 relies heavily on the .NET Framework and specific Windows DLLs. Portable versions often crash or fail to save files correctly when moved between different versions of Windows.

While Microsoft offers official versions of Visio (Standard, Professional, and Pro for Office 365), they of Visio 2013. The Risks of Unofficial Portable Versions

In theory, a "portable" app is a version of a software program designed to run from a or cloud folder without being installed on the host computer's hard drive. It doesn't leave configuration files behind or modify the system registry.

Distributing or using a "cracked" portable version of Visio is a violation of Microsoft’s End User License Agreement (EULA) and can lead to legal issues for businesses. Better Alternatives for Diagramming on the Go

Most "portable" versions of Visio 2013 found online are created by third parties using "thin-apping" or sequencing tools. Using these carries significant risks: