: Using activators violates Microsoft's terms of service, which may lead to:
: Unauthorized modifications to system files can lead to instability, activation errors (such as error 0xC004F213), or the inability to receive critical security updates. Legitimate Alternatives aact 389 windows and office activator work
If you already installed it and regret it: : Using activators violates Microsoft's terms of service,
Circumventing software licensing is a violation of Microsoft's Terms of Service activation errors (such as error 0xC004F213)
Legal Implications of Using Activator Tools for Windows - YTU
Here's a step-by-step overview of the process: