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COMQC_E_QUEUING_SERVICE_NOT_AVAILABLE
This code places the first failure in MSMQ dependency for COM+ queued components. Operationally, COM+ cannot perform queued activation because Microsoft Message Queuing is absent, disabled, unreachable, or not available in the required configuration.
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 MSMQ dependency for COM+ queued components. 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 MSMQ dependency for COM+ queued components.
Do not collapse this result into a nearby status. A stopped COM+ listener differs from a missing/unavailable Message Queuing substrate. For MSMQ dependency for COM+ queued components, 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
| Capture | Why it matters |
|---|---|
| MSMQ feature installation, service state, workgroup/domain mode, and queue manager identity | Separates a contract or configuration defect from a transient environmental failure in an incident involving MSMQ dependency for COM+ queued components. |
| COM+ application queue path/format name and transactional requirement | Provides a stable comparison point for a controlled reproduction before changing the state involved in MSMQ dependency for COM+ queued components. |
| Service dependencies and event logs from MSMQ and COM+ | Shows whether the proposed correction changes the first failing boundary during verification of MSMQ dependency for COM+ queued components. |
| Local versus remote destination and firewall/name-resolution state | Locates the exact attempt and prevents evidence from a later retry from being mixed into it when diagnosing MSMQ dependency for COM+ queued components. |
Collect the smallest evidence set that identifies the attempt and object when diagnosing MSMQ dependency for COM+ queued components. Redact secrets and message contents; preserve hashes, IDs, policy values, versions, and state transitions instead for an incident involving MSMQ dependency for COM+ queued components.
Reproduce the boundary safely
- Create and read a simple private queue outside COM+; use a disposable or backed-up environment when the comparison changes boot, security, device, queue, or encryption state.
- Use a local direct format name to separate directory lookup from queue service health; retain one negative control so that a broad workaround is not mistaken for a root-cause correction.
- Restart only MSMQ and the queued-component listener after preserving pending messages; keep every other input fixed and record the first event that differs from the failing run.
For MSMQ dependency for COM+ queued components, one clean comparison is more informative than many uncontrolled retries. For the MSMQ dependency for COM+ queued components comparison, keep the original inputs and identity, change a single suspected condition, and stop as soon as the first differing event is visible.
Nearby states and false leads
Read the comparison results in this order for MSMQ dependency for COM+ queued components:
| Observed result | Interpretation |
|---|---|
| The minimal or known-good comparison succeeds | For MSMQ dependency for COM+ queued components, 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 MSMQ dependency for COM+ queued components, 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 MSMQ dependency for COM+ queued components boundary moved; diagnose the new status separately rather than treating it as confirmation that the entire operation is fixed. |
Closing the incident
A defensible correction is specific to the evidence: Install and configure the supported MSMQ feature, restore queue-manager health, and validate the exact destination format/transaction mode. For MSMQ dependency for COM+ queued components, preserve the pre-change export or trace and document the exact configuration, build, identity, object, or policy that changed.
Close the incident only when messages can be enqueued, survive sender exit, and are consumed after listener restart without loss or duplicate business effects. For MSMQ dependency for COM+ queued components, 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 MSMQ dependency for COM+ queued components, but it is not regression proof.
Technical references
These references define the HRESULT family and the subsystem contract used above for MSMQ dependency for COM+ queued components:
- Microsoft: COM error codes.
- Microsoft: using the queue moniker.
- Microsoft: COM+ queued components tasks.
- Microsoft: Message Queuing.
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