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COMQC_E_UNAUTHENTICATED
For queued-message authentication policy, the important question is not merely what the text says, but which contract was being evaluated. At this boundary, a COM+ queued application that requires authenticated messages received one without acceptable MSMQ authentication evidence.
Operational meaning
Queued Components cross several independent layers: call recording, MSMQ transport, message authentication, listener playback, and execution of the business method when diagnosing queued-message authentication policy. Message ID, queue format name, original sender, any mover or requeuer, and the COM+ application version are the keys that join those layers without treating every queue symptom as the same fault for an incident involving queued-message authentication policy.
Do not collapse this result into a nearby status. Queue ACL authorization controls who may send; message authentication proves origin/integrity and is a separate decision. For queued-message authentication policy, compare the lifecycle stage, object identity, caller context, and first returning API—not only the English wording or the final dialog shown to the user.
Build the incident record
| Preserve before changing state | Diagnostic value |
|---|---|
| Message authentication level, sender certificate, signature status, and queue authentication policy | Separates a contract or configuration defect from a transient environmental failure in an incident involving queued-message authentication policy. |
| Queue moniker AuthLevel and sender account/certificate context | Provides a stable comparison point for a controlled reproduction before changing the state involved in queued-message authentication policy. |
| MSMQ security events and whether an intermediary re-created the message | Shows whether the proposed correction changes the first failing boundary during verification of queued-message authentication policy. |
| Time, certificate chain, revocation, and destination queue identity | Locates the exact attempt and prevents evidence from a later retry from being mixed into it when diagnosing queued-message authentication policy. |
The goal is reproducibility, not a full data dump when diagnosing queued-message authentication policy. Prefer object IDs, configuration exports, event correlation, and redacted paths over credentials, cryptographic material, or user content for an incident involving queued-message authentication policy.
Tests that separate the causes
- Send one authenticated and one explicitly unauthenticated test message; keep every other input fixed and record the first event that differs from the failing run.
- Verify the sender certificate and MSMQ signing outside COM+; use a disposable or backed-up environment when the comparison changes boot, security, device, queue, or encryption state.
- Compare direct format-name and directory-based delivery without changing authentication; retain one negative control so that a broad workaround is not mistaken for a root-cause correction.
For queued-message authentication policy, one clean comparison is more informative than many uncontrolled retries. For the queued-message authentication policy comparison, keep the original inputs and identity, change a single suspected condition, and stop as soon as the first differing event is visible.
Interpretation boundaries
Use the outcomes to narrow the layer rather than to accumulate unrelated fixes for queued-message authentication policy:
| Observed result | Interpretation |
|---|---|
| The minimal or known-good comparison succeeds | For queued-message authentication policy, the platform path is available; concentrate on the production object, arguments, identity, policy, or lifecycle state described above. |
| The control fails at the same first operation | For queued-message authentication policy, failure of the control points below application-specific data; preserve service, provider, operating-system, or host evidence before changing the environment. |
| A different HRESULT appears after one controlled change | The queued-message authentication policy boundary moved; diagnose the new status separately rather than treating it as confirmation that the entire operation is fixed. |
Repair without losing evidence
The corrective action should be narrow: Configure the sender certificate and queue moniker authentication level to match the receiving application policy. For queued-message authentication policy, preserve the pre-change export or trace and document the exact configuration, build, identity, object, or policy that changed.
Close the incident only when authenticated messages are accepted, unauthenticated controls remain rejected, and certificate rollover is tested before deployment. For queued-message authentication policy, repeat the original supported operation under the original identity and object state, then retain one deliberate boundary or negative test. A result from a different account, simplified input, replacement object, or unrelated machine is useful comparison data for queued-message authentication policy, but it is not regression proof.
Technical references
Use these sources for the formal contract, then combine them with evidence from the returning application or service for queued-message authentication policy:
- Microsoft: COM error codes.
- Microsoft: using the queue moniker.
- Microsoft: COM+ queued components tasks.
- Microsoft: Message Queuing.
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