1) Is your PC connected to the internet?
To activate the license, your device needs to be connected to the Internet.
Check the internet connection of your Windows device.
2) Is the Company Code or Authentication Code which you entered correct?
If the Company Code or Authentication Code is incorrect, you can't activate it.
Check your Company Code and Authentication Code again.
3) Do you have enough licenses?
You can't activate this product for more instances than the number of licenses.
Contact your administrator about the number of licenses.