Slow download or installation stuck.
The installation of Microsoft Office might look slow or even stuck at a fixed percentage as shown on the following picture :
No worries, the installation is still progressing in the background. It can take from a few minutes for the fastest networks, to a few hours for the slowest ones.
Warning: Do not restart the installation, it will restart from 0%.
Once the loading bar reaches 100%, you will be able to see the following window confirming you that Office has successfully been installed :