Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
I got a same problem like yours. but mine is more weird. so I got an office 2016 pro plus product key. I just brought it a minute ago. and I want to get the office from setup.office.com (login Microsoft acc, enter product key, then get office). when I downloaded the office installer and open it (5MB so the real download will proceed after we open the app), it stuck at "We're getting things ready" and it took up to 3 hrs and its shows no progress. my internet connection is stable with high speed download, but it just won't install and keep stuck at "We're getting things ready". so any solution?
Unfortunately, I seemed to be having so many issues I ended up doing a refresh to factory settings on my PC, and was then able to reinstall Office.