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COMQC_E_APPLICATION_NOT_QUEUED
Treat this HRESULT as a marker for COM+ application queue configuration, not as a request for a generic restart or reinstall. It is returned when the queue moniker targeted a COM+ application that is not marked to support queued activation.
The contract behind the HRESULT
Queued Components cross several independent layers: call recording, MSMQ transport, message authentication, listener playback, and execution of the business method when diagnosing COM+ application queue configuration. 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 COM+ application queue configuration.
Do not collapse this result into a nearby status. A queue can exist in MSMQ while the COM+ application is not configured as queued; both catalog and queue state matter. For COM+ application queue configuration, 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.
Diagnostic worksheet
| Preserve before changing state | Diagnostic value |
|---|---|
| COM+ application identity, QueuingEnabled/Listening state, CLSID, and queue moniker | Locates the exact attempt and prevents evidence from a later retry from being mixed into it when diagnosing COM+ application queue configuration. |
| COM+ catalog export or Component Services settings | Separates a contract or configuration defect from a transient environmental failure in an incident involving COM+ application queue configuration. |
| Destination MSMQ queue and whether it was created for this application | Provides a stable comparison point for a controlled reproduction before changing the state involved in COM+ application queue configuration. |
| Client moniker parameters and server application name | Shows whether the proposed correction changes the first failing boundary during verification of COM+ application queue configuration. |
Identifiers, timestamps, versions, counts, state flags, hashes, and redacted paths normally provide enough correlation when diagnosing COM+ application queue configuration. Keep credentials, private keys, message bodies, recovery material, and personal data out of routine incident logs for an incident involving COM+ application queue configuration.
Reproduce the boundary safely
- Activate the component directly to verify ordinary COM registration; keep every other input fixed and record the first event that differs from the failing run.
- Enable queuing on a test copy of the COM+ application and compare; use a disposable or backed-up environment when the comparison changes boot, security, device, queue, or encryption state.
- Enumerate the application queue and listener before sending a method call; retain one negative control so that a broad workaround is not mistaken for a root-cause correction.
For COM+ application queue configuration, a retry becomes evidence only when one controlled variable changes. In the COM+ application queue configuration case, if the same operation later succeeds unchanged, preserve that fact but continue checking timing, object generation, service restart, cache replacement, or policy refresh; transient success does not explain the earlier boundary.
Nearby states and false leads
The following decision points keep the investigation tied to the returning operation for COM+ application queue configuration:
| Observed result | Interpretation |
|---|---|
| The minimal or known-good comparison succeeds | For COM+ application queue configuration, 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 COM+ application queue configuration, 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 COM+ application queue configuration boundary moved; diagnose the new status separately rather than treating it as confirmation that the entire operation is fixed. |
Closing the incident
Apply the smallest change that addresses the first rejected condition: Mark only the intended COM+ application as queued, create/associate its queue, and start listening under the correct identity. For COM+ application queue configuration, preserve the pre-change export or trace and document the exact configuration, build, identity, object, or policy that changed.
Close the incident only when a queued call is recorded, delivered once to the intended application, and a nonqueued test application remains rejected. For COM+ application queue configuration, 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 COM+ application queue configuration, but it is not regression proof.
Technical references
The diagnostic boundaries above are grounded in the following Microsoft specifications and API documentation for COM+ application queue configuration:
- Microsoft: COM error codes.
- Microsoft: using the queue moniker.
- Microsoft: COM+ queued components tasks.
- Microsoft: Message Queuing.
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