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Why does Windows 11 require TPM 2.0?

Last reviewed by the MSLicenseHub Licensing Desk.

TPM 2.0 is a hardware chip that stores cryptographic keys in a way the operating system cannot read directly. Windows 11 uses it for BitLocker drive encryption, Windows Hello biometric auth, Credential Guard, Measured Boot and Pluton (where present). Mandating TPM 2.0 raises the security floor for the entire Windows 11 fleet, which is the main reason Microsoft tightened the requirements compared to Windows 10.

Most enterprise hardware bought after 2018 has TPM 2.0 (sometimes disabled in firmware — enable it in BIOS/UEFI). Older hardware that lacks TPM 2.0 cannot run Windows 11 in a supported configuration.

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01Device02Edition03Activation
  1. Device
  2. Edition
  3. Activation
Why does Windows 11 require TPM 2.0? — concept diagram, not a Microsoft interface

Match Home, Pro or Enterprise to the required management features. Check Windows 11 hardware eligibility and the exact release support date; a working activation does not prove entitlement.

Decision checklist

Evidence to connect the answer to your actual requirements
CheckWhat to record
Product and versionRecord the full name, edition, version and part number in the quote.
Scope of useIdentify the user, device or deployment; count only the metric applicable to this product.
Evidence and supportRetain the agreement, invoice and support lifecycle date; perpetual licensing does not mean perpetual support.

Official Microsoft terms and licensing guidance · Product support lifecycle

Practical checklist

  • TPM 2.0 stores keys securely in hardware and supports BitLocker, Windows Hello and measured boot.
  • Most PCs from about 2017 onwards have a firmware TPM (Intel PTT or AMD fTPM) that may need enabling in UEFI.
  • Run the PC Health Check app or tpm.msc to see whether TPM 2.0 is present and enabled.
  • Windows 11 also needs UEFI with Secure Boot and a supported processor.

Common mistakes to avoid

  • Using registry or ISO tricks to bypass checks on business machines.
  • Assuming an old PC lacks a TPM before checking firmware settings.
  • Clearing the TPM without first backing up BitLocker recovery keys.

Official source: Microsoft documentation. Licensing terms change; confirm against the current Product Terms before buying.

#windows 11#tpm 2.0#security

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