Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
Hi Jonathan,
To resolve the issue, let us run the Fix it from the following article to remove all traces of Office 365 on the system.
http://support.microsoft.com/kb/2739501
Note: Ensure to save the Fix it file on the desktop and then run it.
Once the Fix it completes, you may install Office 365 and verify the results.
You may also refer to the following article General troubleshooting for installing Office 2013 and Office 365 and check if it helps.
http://support.microsoft.com/kb/2822317
I hope this fixes the issue. If you still have issues, you may reply and we’ll be happy to help you.
Thank you.