Microsoft Office 2013 Portable Link |work| Online

Office 2013 (unlike Office 2010) used Microsoft's App-V (Application Virtualization). It creates a virtual file system and registry. To run it from a USB drive, you would need to carry that virtual environment with you—which is roughly 2GB of data. But that virtual environment links to hardware IDs. Move the USB to another computer, and the virtual environment rejects the new hardware.

To "portablize" Office 2013, a hacker must break the software, strip away activation checks, and trick Windows into redirecting registry calls to a USB drive. This process is fragile, illegal, and almost always malicious. microsoft office 2013 portable link