: Go to Settings > System > Activation and select "Change product key" to enter a valid 25-character code. Why Avoid Third-Party Activators?
It is important to approach "free activator" downloads with caution, as files like the one mentioned——are often associated with security risks like malware or credential theft. : Go to Settings > System > Activation
Are you currently seeing a on your activation screen? : Go to Settings > System > Activation