While the idea of a "Microsoft Office 2019 Portable" version is popular for its convenience, it is important to know that Microsoft does not offer an official portable version of Office 2019.
While "Microsoft Office 2019 Portable" may seem like a convenient solution for using Office on the go, it carries significant risks. Microsoft does not release this software in a portable format; therefore, any file claiming to be such is unauthorized modified software. The potential for malware infection and legal liability outweighs the convenience. For a safe experience, users should utilize Office Online or the legitimate, open-source LibreOffice Portable. microsoft-office-2019-portable
If you truly need a USB-based office suite that requires no installation, the open-source community provides excellent, safe alternatives available through platforms like PortableApps.com: While the idea of a "Microsoft Office 2019
End of support for Office 2016 and Office 2019 - Microsoft Support The potential for malware infection and legal liability
End of support for Office 2016 and Office 2019 | Microsoft Support
. While the software still functions, using it—especially "portable" versions from unofficial sources—carries significant security risks. Core Features of the 2019 Suite