PowerShell: Check TPM Specification Version
Need to check the TPM specification version - to confirm Windows 11 compatibility or verify a security requirement? This one-liner pulls it straight from the system.
Prerequisites:
- Privileges: Run as Administrator
- Module: Built-in, no import needed
Quick Command:
Get-CimInstance -Namespace "root/CIMV2/Security/MicrosoftTpm" -ClassName Win32_Tpm | Select-Object SpecVersionExample Output:
SpecVersion
-----------
2.0, 0, 1.16📦
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How It Works:
- Get-CimInstance queries the dedicated TPM namespace (root/CIMV2/Security/MicrosoftTpm), separate from the standard root/cimv2 namespace used by most other system info.
- SpecVersion returns three comma-separated values: the TPM specification version (2.0), the error revision, and the specification revision number - the first value (2.0 or 1.2) is what matters most for compatibility checks.
- Windows 11 requires TPM 2.0 - if this shows 1.2, the machine doesn't meet the official hardware requirement.