Therefore, "Microsoft Office 2019 Portable" almost exclusively refers to of the software created by third parties (often "hackers" or software cracking groups). These are usually stripped-down versions of the official software, wrapped in a portable launcher.
Many so-called portable versions are actually . They run a silent, temporary installation onto the host PC's hard drive and registry, launch the application, and then theoretically remove themselves when you close the app. This is not portable; it is a "stealth install" or "run-and-wipe." It requires: microsoftoffice2019portable
: High-performance portable builds are often compressed, with some versions taking up less than 3 GB of total space. Risks and Legal Considerations Microsoft Office 2019 Portable - Get the Full