Microsoft tightens Windows enterprise activation security

Microsoft is making Trusted Platform Module (TPM)-backed attestation a requirement for Windows Key Management Service (KMS), the on-premises service used for Windows volume activation, replacing the software-only trust model with hardware-backed verification to strengthen enterprise activation security. Attestation will become mandatory with the next Windows Server Long-Term Servicing Channel (LTSC) release. How TPM-backed KMS attestation works The KMS server uses its TPM to generate an attestat