By default Add features to Windows 8. 1 is available for all administrators. If you enable this policy setting the wizard will not run. If you disable this policy setting or set it to Not Configured the wizard will run.

1. Registry path is:

   HKEY_CURRENT_USER -> Software -> Microsoft -> Windows -> CurrentVersion -> Policies -> Explorer -> WAU # Disabled

2. The Administrative Template path is:

   Windows Components -> Add features to Windows 8. 1

* Making mistakes while changing registry values can affect your system adversely. We recommend you to create a System Restore point before making registry manipulation. If you're new to Registry Editor, read this beginner's guide.

** To locate the registry and administrative template path, checkout beginner's guide.