Installation of Office 365 for Mac is freezing at "Running Package Scripts" (Sierra) I just downloaded Office 365 for Mac, and tried to install it in macOS Sierra 10.12.5. The installation froze when Running Package Scripts.

It is a common problem. I followed this answer and launched Disk Utility, but it seems that there is no repair disk permission in Sierra.

Then, I found the answer of dianeoforegon here. I did pay attention to close all browsers and applications (except Finder) before launching the installer. Clicking on Shift did not help either.

It is really annoying. Does anyone have a solution? Otherwise, how could I clean what I have installed completely?

Edit 1: I chatted to Microsoft support yesterday, and they let me create a new user account on my Mac, and install Office 365 under that account. I tried, the installation was freezing at the same place.

Edit 2: I chatted to another Microsoft support agent, he suggested me to remove the Office before installing, I then removed them in Applications, there was no Library/Containers or Library/Group Containers (I guess it is because the installation was not completed). And the re-installation still failed at the same place.

Additionally, I have to use VPN to connect to the internet, some sites still don't work well. Is this an issue? Does Running Package Scripts require some special Internet connection?
Turn off virus protection. As soon as I did that the installer completed the task.