Windows 8 Clean Install Upgrade pack activation method

while activating windows in case you encounter any error, follow the steps below to correct it

1. Run the registry editor (regedit)

2. Find the following key: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Setup\OOBE
3. Change the value for ‘MediaBootInstall’ from 1 to 0
4. Open an elevated command prompt (run as admin)
5. Run the following command: slmgr -rearm
6. Reboot


slmgr / ipk  <Product Key>

Win 8 Clean install Upgrade Pack Activation.jpg