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TPM_E_PPI_ACPI_FAILURE
TPM_E_PPI_ACPI_FAILURE means Windows could not obtain the BIOS/UEFI response required for a TPM Physical Presence Interface (PPI) request through ACPI.
What to check
- Check whether the firmware exposes TPM physical-presence support and whether the system is using the expected UEFI/ACPI configuration.
- Review TPM status and firmware settings before retrying the request.
- If a firmware update or configuration change preceded the error, use OEM guidance because PPI behavior is implemented by platform firmware.
tpmtool getdeviceinformation
Microsoft: Troubleshoot the TPM
Microsoft: TPM and PCP error codes
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