If you specifically need a standalone .exe file that runs from a thumb drive, consider these powerful, open-source, and free alternatives that offer native portable versions: Draw.io (diagrams.net)
Using modified versions of Microsoft software violates licensing agreements and can lead to legal complications for businesses. Legitimate Ways to Use Visio Portably portable download microsoft visio portable
Because Visio relies heavily on Microsoft Office shared components, portable "wrappers" often crash or fail to save work correctly. If you specifically need a standalone