0x80072EFD, 0x80072EE7, 0x80072F8F, 0x8004FE94 Errors

Cause
These errors indicate the Windows Activation client did not receive a response from the Windows Activation server. Any of the following could contribute to this issue:

The computer's date and time settings are incorrect.
General network-related failures occurred.
Resolution
To resolve this issue, perform the following steps:

Ensure the computer BIOS has the correct time.
Ensure Windows has the correct date and time settings.
Troubleshoot network connectivity:
If you are using a router, connect the computer directly to the WAN connection (Internet connection).
If you are using a third-party firewall or Internet security software, view the product documentation from the manufacturer for information about permitting HTTPS traffic (TCP port 443).
Turn off Automatic Proxy Settings:
Point to Start>Internet Explorer®.
Select Tools>Internet Options. Select the Connections tab and click the LAN Settings button.
Remove the check mark beside Automatically Detect settings.
Use an alternate activation method such as activation by phone.