Tap Win then type Cmd to show Command Prompt, right-click and choose ‘Run as Administrator’. To see full details of the Office licences installed, you need a Command Prompt window with Administrator access. Customers should not need to bother if the software worked properly. There’s no direct way to edit the Office licences installed on a computer.
How to remove the Office 2016 licence and, hopefully, force Office 365 to work properly? Office 365 isn’t running in View Only mode either, despite the warning. The computer is listed as a user of that Office 365 licence.
The licence is definitely valid, as confirmed on the Office web account for the customer.
