While portable, this version retains the core functionalities that make Microsoft Word the industry standard:

Because it does not modify the Windows Registry or leave behind leftover files, it keeps the host computer clean and fast. The Hidden Dangers of Downloading Portable Word

. Most "portable" versions found online are unofficial, third-party modifications that may contain security risks or malware. Microsoft Learn

It does not modify the Windows registry or leave behind temporary files on the host computer.