For Office 2016 Professional Plus 32 bit:
1, Go to https://setup.office.com
2, Login with your Microsoft account
3, Fill the digital code in the form and then choose region/language
4, Confirm related information and will get the download link button at last.
For Office 2016 Professional Plus 64 bit:
1, Download startup file from the office site below:
2, Extract the files to a folder
3, Run setup64 at subdirectory of the folder and wait for the installation is complete.
4, Open any office application and fill the key to activate directly
English Version Download Link
Arabic Version Download Link
Croatia Version Download Link
Deutsch Version Download Link
España Version Download Link
French Version Download Link
Greek Version Download Link
Portugal Version Download Link
Traditional Chinese Version Download Link