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NS_I_LIMIT_BANDWIDTH
NS_I_LIMIT_BANDWIDTH — 0x400D0070
This result belongs to server bandwidth ceiling change not to a generic restart checklist, because an administrator changed the aggregate bandwidth limit used by the legacy media server.
What the status actually records
The server can enforce separate limits for concurrent streams, aggregate bandwidth, publishing points, and individual media profiles. In the context of server bandwidth ceiling change, the measured resource and scope of the configured ceiling must be recorded before changing values. Locate the first component that changes state and distinguish later summary errors.
Important distinction. Bandwidth limits and concurrent-stream limits constrain different resources and should be measured independently.
Evidence before intervention
- Administrator source, new bits-per-second value, previous value, and scope
- Active stream bitrates, aggregate output, network-interface capacity, and per-point limits
- Admission or bitrate warnings around the change
- Automation or policy that may reapply another value
A controlled diagnostic path
- Generate known-bitrate test streams until the aggregate ceiling is reached.
- Hold session count constant while varying bitrate to isolate bandwidth behavior. Keep media bytes, server identity, and unrelated publishing-point settings fixed.
- Compare the server-wide limit with a publishing-point limit and physical interface capacity. 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 failure point changed; the replacement status now describes the next contract to investigate. |
Correction and acceptance criteria
Correction: Set the ceiling from verified network and server capacity, then remove contradictory per-point or automated settings.
Accept the repair only when aggregate output is bounded at the intended value, admission behavior is predictable, and existing streams follow the documented policy.
Technical references
- Microsoft Open Specifications: HRESULT values — defines the formal status.
- Microsoft: Windows Media Services 9 Series SDK — documents the relevant API or lifecycle.
- Microsoft: programming the Windows Media server object model — provides the architecture, format, or protocol context.
- Microsoft Open Specifications: media streaming server scenario — supports the controlled verification criteria.
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