Support for Office 2016 and Office 2019 ended on October 14, 2025 and there will be no extension and no extended security updates. Microsoft Support Where to enter your Office product key - Microsoft Support
However, I must first give you an important heads-up: Most "portable ISO" copies found online are either: microsoft office 2016 ptbriso portable
Many "portable" packages include "crack" tools or activators. These tools often modify system files, which can lead to system instability or further security breaches. 2. Legitimate Alternatives Support for Office 2016 and Office 2019 ended
– Microsoft does not release Office as a portable app. Any “portable” version is unauthorized, modified, and almost always a cracked/pirated copy. and almost always a cracked/pirated copy.
. Using it now—especially an unofficial version—means you will not receive critical security updates to protect against new threats. Copyright Issues
to access Word, Excel, and PowerPoint for free in any browser. This is the only official "zero-install" way to use Office on any computer. USB Installation : You can create a bootable USB drive
The honest, technical answer is Here is why the combination of "Office 2016" and "Portable" is an oxymoron.