The short answer is no. Microsoft has never released an officially portable version of Office 2019. Every legitimate copy requires installation, activation via a product key (or Microsoft 365 subscription), and writes deeply into the operating system.
So, what are people actually finding when they search for this? They are almost exclusively finding unofficial, repackaged, cracked versions created by third-party groups. ms office 2019 portable version no need to install
These two models are incompatible for modern Microsoft Office. The short answer is no
LibreOffice is a free, open-source office suite compatible with Microsoft files (.docx, .xlsx, .pptx). ms office 2019 portable version no need to install