Steps to be followed:
Create a ticket and provide all the information requested as mentioned below:
Product Name: Microsoft Office Professional 2016
Product Version: 16.0.5317.1000 MSO (16.0.5278.1000)
Comments: windows-x64
Publicly Downloadable URL: https://support.microsoft.com/en-us/office/download-and-install-or-reinstall-office-2019-office-2016-or-office-2013-7c695b06-6d1a-4917-809c-98ce43f86479
Information URL: Windows x64 Installer
Vendor: Microsoft