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TPM_E_DAA_WRONG_W
The protocol checkpoint
TPM_E_DAA_WRONG_W (0x80280057) belongs to TPM 1.2 Direct Anonymous Attestation. The base What Is page already shows the short Windows message; the additional diagnostic value is that this result marks the DAA protocol value w fails its mathematical or transcript consistency check.
The first producer to identify for this HRESULT is the staged DAA enrollment or signing state machine. Direct Anonymous Attestation in TPM 1.2 is a multi-stage protocol. Each stage consumes issuer data, TPM-specific state and outputs from earlier stages, so the first inconsistent transcript element is more useful than the final generic application failure.
Read this result as its own boundary in a sequence, not as a verdict that every TPM feature is broken. The sequence reaches the DAA protocol value w fails its mathematical or transcript consistency check, and the component returns 0x80280057 before the application can safely assume that later key, attestation, boot or licensing work occurred.
What to preserve before retrying
- Request identity: exact function or command, input lengths, flags, caller context and this result.
- State identity: the encoded w value, issuer parameters, stage, prior TPM output, group parameters, byte order, and any leading-zero normalization.
- Platform identity for this HRESULT: TPM generation, manufacturer/firmware revision, Windows build and relevant service events.
- Binary identity: preserve opaque structures byte-for-byte and log
0x80280057in hexadecimal.
Minimal reproduction
Recompute w from the exact issuer and tpm transcript and compare its canonical encoding. Keep every other this result test condition unchanged. If the comparison reaches a later checkpoint, then the original the condition has been isolated even when a second defect remains.
| Observed outcome | Interpretation |
|---|---|
| The exact request succeeds | The changed condition belongs to the rejected the DAA protocol value w fails its mathematical or transcript consistency check. |
| A more specific earlier code appears | Preserve the earlier result in the result trace; the previous trace probably lost the first producer. |
| The same code returns with identical bytes | Escalate the persistent it with firmware, service and command evidence rather than broad configuration changes. |
| The code disappears only after destructive reset | The result experiment is not diagnostic because original protected state and evidence were removed. |
Nearby codes with different meanings
| Nearby constant | Why it is different |
|---|---|
TPM_E_DAA_ISSUER_VALIDITY | The issuer's validity check has detected an inconsistency — a separate checkpoint when compared with it. |
TPM_E_DAA_STAGE | The atomic process indicated by the submitted DAA command is not the expected process — a separate checkpoint when compared with it. |
TPM_E_DAA_TPM_SETTINGS | The consistency check on DAA_tpmSpecific has failed — a separate checkpoint when compared with it. |
For this page, the useful contrast is: TPM_E_DAA_INPUT_DATA0 and TPM_E_DAA_INPUT_DATA1 identify general input fields rather than the specific w value.
Resolution criteria
Apply the narrow remedy: correct the issuer-side DAA calculation or serialization and restart the affected flow. Do not mix values from separate DAA attempts. The protocol is staged and transcript-bound; substituting one issuer value or nonce can make every later stage misleading.
Close the incident only when the same API or TPM command passes with the intended hardware-backed behavior and the expected output can be independently validated.
References
- TCG: TPM 1.2 Main Specification — source for the checkpoint.
- TCG: TPM 1.2 Part 2 — DAA structures — source for the checkpoint.
- TCG: TPM 1.2 Part 3 — DAA commands — source for the checkpoint.
- Microsoft: TPM technology overview — source for the checkpoint.
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