Installing the latest Office 2016 updates available, should resolve this problem.
In some instances, performing the steps from Microsoft KB 3160013 is required.
Please follow the steps from Microsoft KB 3160013
to set below DWORD (32-bit) ShownFirstRunOptin Value to 1.
If DWORD (32-bit) ShowFirstRunOption does not exist, it needs to be manually created.
Windows Registry Disclaimer:
Quest does not provide support for problems that arise from improper modification of the registry. The Windows registry contains information critical to your computer and applications. Make sure you back up the registry before modifying it. For more information on the Windows Registry Editor and how to back up and restore it, refer to Microsoft Article ID 256986 “Description of the Microsoft Windows registry” at Microsoft Support.