If you specifically need Office 2016 Professional Plus (not recommended for security reasons), here are legal channels:
If you found this file on a torrent, file-sharing site, or “free download” blog: swdvd5officeprofessionalplus2016w64english
You cannot contact Microsoft Support for help with installation or activation issues on an illegitimate copy. If you specifically need Office 2016 Professional Plus
Pirated Microsoft Office releases often follow predictable naming conventions. Red flags include: swdvd5officeprofessionalplus2016w64english
Always verify SHA-1 hashes against Microsoft’s official MSDN or VLSC catalogs when in doubt.