The error (ox80072ee7) usually indicates a network problem, is your network working correctly?
1
Open Command Prompt by right clicking its icon and select 'Run as Administrator'
Run this command in Command Prompt and press Enter.
slmgr /rilc
When that command completes, close Command Prompt.
2
Then open the Settings app, go to System - Activation and click the Troubleshoot button if Windows is not activated.