device activation

Microsoft's Trusted Platform Module (TPM) 2.0 has been integral to Windows 11's security since its launch in 2021. TPM is now standard in most CPUs, allowing Microsoft to enhance device activation security. The current Key Management Service (KMS) model has vulnerabilities that hackers exploit, prompting the need for stronger device identity and activation integrity assurances. TPM provides a hardware-level security mechanism for the activation process, where KMS hosts must present TPM credentials to validate their hardware identity and confirm they are uncompromised. Starting with upcoming Windows Server releases, KMS hosts will be required to prove they run on verified hardware before activating clients. By August 2026, Windows Server 2025 will help administrators prepare for these changes.