I have had problems Activating and Updating Windows 7.
I have an Endian firewall appliance.
The main error I was getting was 0x80072EFD – unable to connect.
For me, the solution (after hours of heartache) was simple:
Go into Control Panel / Network and Internet / Internet Options / Connections tab / LAN Settings,
UNTICK “Automatically detect settings” and press OK.
Activation then works.
Updates then work perfectly.
Sorry – I’m not sure why this happens. I suspect it’s a bug in Endian version 2.2 which is fixed in later a version, probably relating to the internal Endian Proxy server which in my case is disabled anyway.
I hope this helps someone.
Many thanks to my son, Lachlan, who also had this problem, and figured out how to fix it after several days of heartache.