HRESULT 0xC00E0099 (MQ_ERROR_RESOLVE

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Description:

Message Queuing is not able to resolve the address specified by the user. The address may be wrong or DNS look-up for address failed.

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MQ_ERROR_RESOLVE_ADDRESS

Interpretation

MQ_ERROR_RESOLVE_ADDRESS belongs to the Message Queuing HRESULT facility, but its useful meaning is narrower than a generic messaging failure. Interpret it as user-supplied network address cannot be resolved, not as a general transport outage. Separate malformed address syntax from DNS lookup failure and from MSMQ protocol reachability.

For MQ_ERROR_RESOLVE_ADDRESS, the queue name, resolved address, MSMQ service, firewall path, protocol version, and requested operation are separate checkpoints. When diagnosing MQ_ERROR_RESOLVE_ADDRESS, A ping or DNS success alone does not prove remote-read support.

When diagnosing MQ_ERROR_RESOLVE_ADDRESS, older MSMQ versions do not implement every lookup-ID or management operation. In the MQ_ERROR_RESOLVE_ADDRESS path, capture the peer version and use a fallback only when its ordering and delivery semantics are acceptable.

Relevant API contract

Subsystem	remote queue access, queue-manager availability, and version-dependent RPC operations
Decisive boundary	a local handle, an outgoing transfer path, and a remote-read RPC path fail for different reasons
Code-specific focus	user-supplied network address cannot be resolved
Primary recovery rule	Log the normalized address and resolver result before retrying.

When diagnosing MQ_ERROR_RESOLVE_ADDRESS, differentiate remote-read RPC from ordinary send-and-forward delivery. In the MQ_ERROR_RESOLVE_ADDRESS path, opening or peeking a remote queue can fail even when outgoing messages eventually reach it. For MQ_ERROR_RESOLVE_ADDRESS, the code-specific boundary is user-supplied network address cannot be resolved.

Decisive observations

Msmq service state and protocol reachability on both systems; associate it explicitly with MQ_ERROR_RESOLVE_ADDRESS.
When diagnosing MQ_ERROR_RESOLVE_ADDRESS, remote msmq version and the exact operation requested; capture the value before cleanup or retry changes it.
In the MQ_ERROR_RESOLVE_ADDRESS path, destination computer and resolved address or format name; compare it with a known-good call using the same account and queue type.
For this MQ_ERROR_RESOLVE_ADDRESS result, record the queue path or format name, local/remote placement, transactional flag, caller SID, process build, and UTC correlation ID when they apply.

For MQ_ERROR_RESOLVE_ADDRESS, log certificate thumbprints, provider names, SIDs, GUIDs, lengths, and hashes where useful, but do not log private keys, symmetric keys, credentials, or confidential message bodies.

Troubleshooting workflow

Record the unsigned HRESULT, MQ_ERROR_RESOLVE_ADDRESS, and the native API or COM method before a framework replaces it with a generic exception.
When diagnosing MQ_ERROR_RESOLVE_ADDRESS, capture remote MSMQ version and the exact operation requested.
Reproduce with the smallest queue/message/property set that still returns MQ_ERROR_RESOLVE_ADDRESS; change one precondition at a time.
For this MQ_ERROR_RESOLVE_ADDRESS result, verify the postcondition after the failed call: queue existence, message presence, directory object state, transaction outcome, or generated output may differ by result.
For MQ_ERROR_RESOLVE_ADDRESS, capture MSMQ service state and protocol reachability on both systems.
When diagnosing MQ_ERROR_RESOLVE_ADDRESS, apply the code-specific recovery rule: Log the normalized address and resolver result before retrying.

Recovery rules

Log the normalized address and resolver result before retrying.

When diagnosing MQ_ERROR_RESOLVE_ADDRESS, do not hide this HRESULT behind an unlimited framework retry. In the MQ_ERROR_RESOLVE_ADDRESS path, require a verified precondition change and preserve the original correlation identifier across the next attempt.

Differences that matter

In the MQ_ERROR_RESOLVE_ADDRESS path, DNS success and an open TCP path are not proof that the remote MSMQ version supports the requested read, cursor, or management operation. The specific focus for MQ_ERROR_RESOLVE_ADDRESS remains user-supplied network address cannot be resolved.

In the MQ_ERROR_RESOLVE_ADDRESS path, changing queue names, deleting directory objects, or recreating certificates without reconciliation can create a second object while callers still reference the first.
For this MQ_ERROR_RESOLVE_ADDRESS result, A successful test under an interactive administrator account does not prove that the production service account has the same profile, token, directory access, or key permissions.

Practical scenario

A cross-machine receiver encounters MQ_ERROR_RESOLVE_ADDRESS. For MQ_ERROR_RESOLVE_ADDRESS, it separates DNS, service/RPC reachability, remote version, and the specific remote-read operation. When diagnosing MQ_ERROR_RESOLVE_ADDRESS, the acceptance test then changes only the decisive precondition and confirms both the HRESULT and the actual queue/message state.

Automated coverage should preserve the original arrays/identities, confirm that cleanup is safe after MQ_ERROR_RESOLVE_ADDRESS, and test that a retry does not duplicate messages or directory objects.

Sources

Microsoft: Windows service port requirements — source used for the MQ_ERROR_RESOLVE_ADDRESS analysis.
Microsoft: destination queues — source used for the MQ_ERROR_RESOLVE_ADDRESS analysis.
Microsoft: Message Queuing error and information codes — source used for the MQ_ERROR_RESOLVE_ADDRESS analysis.
Microsoft Open Specifications: Queue Manager Remote Read Protocol — source used for the MQ_ERROR_RESOLVE_ADDRESS analysis.
Microsoft Open Specifications: MSMQ protocols overview — source used for the MQ_ERROR_RESOLVE_ADDRESS analysis.

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