RE: Installation of Office 365 stucks at 87%: "We couldn't install Office"

Hi Tslr,

Thanks for your updates and the efforts to help us investigate the issue.
I have done a further research. I find the issue may occur if you have an HP 4500 Officejet printer or an HP 8500 Officejet printer.
For detailed information, please see the article below:
Microsoft Office 2013 or Office 365 hangs during setup between 80% and 90%

Meanwhile, for your reference, I find the following articles taking about the similar issue.
General troubleshooting for installing Office 2013 and Office 365
Office 365 or Office 2013 installation process stops at the “10%”

Please feel free to get back if the issue persists.

Best Regards,
Charles Li