You might see this error if you’re not connected to the internet or the activation server is temporarily unavailable. Make sure that you’re connected to the internet and your firewall isn’t blocking Windows from activating.

Alternatively, you may activate Windows by phone, just follow the instructions below:

1. Press Windows Key + R to open the Run tool on your computer.

2. Type Slui 4 then hit the Enter key. This action will launch the Activation wizard.

3. Select your country or region and click Next.

4. You will be prompted to call the number listed on the screen.

6. At this point, it will verify your confirmation ID, then activate your Windows.

IF this way doesn’t work then contact us our live support chat or create a support ticket  …