When I upgraded from windows 7 ultimate to windows 8, it was all smooth and the there was no problem. When I clicked on update now, the message was displayed that "Activate windows before updating"
However all trouble started when I wanted to activate the Windows 8 by entering the KEY.
Clicking on activate link said Windows cannot be activate now, contact your administrator!
For complete 72 hour I kept on repeating the process of installing and uninstalling thinking that there would have been some problem in installation.
Then I came across this process as given below
To change the product key without first activating Windows, use one of the following methods:
4. This is the method I followed to activation.
However all trouble started when I wanted to activate the Windows 8 by entering the KEY.
Clicking on activate link said Windows cannot be activate now, contact your administrator!
For complete 72 hour I kept on repeating the process of installing and uninstalling thinking that there would have been some problem in installation.
Then I came across this process as given below
To change the product key without first activating Windows, use one of the following methods:
Method 1
- Press Windows+r key.
- Type Command in run
3. Then press enter. you will be taken to Screen where you enter the Activation key.
 |
| Type slui 3 at command prompt |
4. This is the method I followed to activation.
Method 2
- Swipe in from the right edge of the screen, and then tap Search. Or, if you are using a mouse, point to the lower-right corner of the screen, and then click Search.
- In the search box, type Slui.exe 0x3.
- Tap or click the Slui.exe 0x3 icon.
- Type your product key in the Windows Activation window, and then click Activate.
Method 3
Run the following command at an elevated command prompt:
Cscript.exe %windir%\system32\slmgr.vbs /ipk <Your product key>
You can also use the Volume Activation Management Tool (VAMT) 3.0 to change the product key remotely, or if you want to change the product key on multiple computers.