HelpWindows7.com

[lambert]

I'm having trouble activating windows 7. I am getting the error code 0×80072EE2 while activating windows 7. How to fix this problem?

[mike25]

This may be due to AVG firewall that block the slui.exe and therefore you won’t be able to activate Windows 7. To disable the firewall process you must have admin privileges.
Here is how to fix activation problem:
(1)Start-->Run-->enter cmd into search box--> Do not just press enter. Hold STRG + Shift and press Enter! That is the shortcut to run this as an admin
(2)Enter the following command to enable hidden admin account
net user administrator /active:yes
(3)Switch users
Start-->shut down--> switch users and you will see the admin account!
Click on the admin icon and now you can turn off your firewall that blocked the slui.exe

(4) Open task-manager. -> services --> navigate to the AVG firewall service --> right-click -> turn it off.
(5)Now click on start-->cmd-->enter slui.exe and you are done

[JIT]

I also had the same problem and McAfee was blocking it on my PC. I disabled firewall and now everything works fine. Good guide