In this post, you’ll learn more about the Error TPM_20_E_LOCKOUT – 0x80280921 that is returned when working with the COM-based APIs in Win32
Win32 COM Error
TPM_20_E_LOCKOUT – 0x80280921
Win32 COM Error Error Description
TPM 2.0: Authorization for objects subject to DA protection are not allowed at this time because the TPM is in DA lockout mode.