Many unofficial downloads are bundled with malware , spyware , or keyloggers . Since you are bypassing standard installation, your antivirus might not catch deep-seated threats.
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 microsoft office visio 2013 portable
Microsoft now offers a web-based version of Visio. It allows you to create and edit diagrams directly in your browser (Edge, Chrome, or Firefox). This is the "official" way to work portably. Many unofficial downloads are bundled with malware ,
While the idea of a version is appealing for its convenience, the security risks and lack of official support make it a dangerous choice. For a seamless experience, switching to Visio Online or a reputable web-based alternative is the most secure and efficient way to manage your diagrams across different devices. Better Alternatives for Diagramming on the Go Microsoft
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
A completely free, open-source tool. It has a native portable desktop app that is safe to use and can open/save Visio-compatible files. Conclusion