Malware and Viruses: Many "activator" tools (like KMSPico) are bundled with spyware or ransomware that can steal your personal data.Temporary Activation: Most free keys found on forums are "Volume Licenses" that have been leaked. Microsoft regularly blacklists these, meaning your software could deactivate without warning.Legal Issues: Using pirated software violates Microsoft’s Terms of Service and, in professional settings, can lead to legal complications for businesses. How to Activate Microsoft 365 with a Key