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TPM_E_PPI_NOT_SUPPORTED
TPM_E_PPI_NOT_SUPPORTED means the system BIOS/UEFI does not implement the TPM Physical Presence Interface required by the requested operation.
What to check
- Confirm whether the platform and firmware version support PPI before building a workflow that depends on it.
- Use the supported TPM administration path for that device instead of repeatedly submitting a PPI request.
- For managed fleets, distinguish devices that lack PPI capability from devices where PPI is merely disabled by policy.
Microsoft: TPM technology overview
Microsoft: TPM and PCP error codes
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