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NS_I_STOP_DISK
NS_I_STOP_DISK — 0x400D005B
This result belongs to administrator-requested disk stop not to a generic restart checklist, because an administrator explicitly requested that a content disk stop participating in the server.
What the status actually records
Administrative information messages record who requested a transition and which object was targeted. In the context of administrator-requested disk stop, they do not guarantee that the requested start, stop, rebuild, or removal completed, so the follow-up object-state event is essential. Locate the first component changing state in this condition and distinguish later summary errors.
Important boundary. A stop command can be expected maintenance; it is not by itself a disk failure or proof that the volume was safely drained. Record the exact constant and returning API.
Evidence before intervention
| Record before retry | Use in verification |
|---|---|
| Administrator location, disk identifier, request time, and active sessions or rebuild operations | Provides a stable before/after comparison for the proposed correction. |
| Whether graceful drain, immediate stop, or maintenance workflow was intended | Shows whether the status is expected information, a warning, or the first failure in the event sequence. |
| Follow-up disk-offline and session migration events | Ties the message to one server object and one transition instead of a later retry. |
| Automation, cluster, or operator record that issued the command | Separates configuration or identity from storage, parser, network, or lifecycle state. |
Collect enough to identify the attempt without copying private media or secrets; hashes, object IDs, timestamps, and configuration exports are normally sufficient.
A controlled diagnostic path
- Stop an idle test disk and capture the normal event order. Record the first server event, object state, or return value that changes.
- Repeat with a controlled active stream to verify drain or interruption policy. Keep media bytes, server identity, and unrelated publishing-point settings fixed.
- Ensure the request targets the expected server and disk UID. Use a disposable publishing point or maintenance window when the test can alter server or storage state.
Do not use repeated reconnects as the main test; a later success can belong to a new session, publishing-point generation, server owner, completed background operation, or different media path.
How to distinguish nearby outcomes
| Observed comparison | Interpretation |
|---|---|
| A known-good object succeeds through the same component | The platform path exists; concentrate on the production object, identity, metadata, or state captured above. |
| The control fails at the same first operation | Preserve server, storage, plug-in, topology, and network evidence before modifying media or publishing-point data. |
| The status changes after one deliberate adjustment | The diagnostic boundary moved; the replacement status now describes the next contract to investigate. |
Correction and acceptance criteria
Correction: Correct unintended automation or targeting, and use the supported drain sequence before stopping disks that host active content. Keep the original server configuration, event sequence, object inventory, input hash, and topology snapshot so the change can be reversed and explained.
Accept the repair only when the intended disk leaves service once, sessions behave according to policy, and no unrelated disk is affected. Repeat the original supported operation under the original identity and object state; a simplified media file, replacement server, new session, or different client is useful comparison evidence but not final regression proof.
Technical references
Use these Microsoft references for the formal contract and combine them with the exact server or catalog evidence from the incident: Check version-specific behavior against the Windows Media Services and SDK generation that produced the event.
- Microsoft Open Specifications: HRESULT values — defines the formal status or component boundary.
- Microsoft: Windows Media Services 9 Series SDK — documents the relevant API or lifecycle.
- Microsoft: Windows Media Services SDK architecture — provides the architecture, format, or protocol context.
- Microsoft: programming the Windows Media server object model — supports the controlled verification criteria.
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