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NS_E_INVALID_MTU_RANGE
Server-side meaning of NS_E_INVALID_MTU_RANGE
Mechanism and scope
This result (0xC00D1586) marks the configured maximum packet size lies outside the WMS multicast writer range. Treat the symbolic name as a map to the owning Windows Media Services subsystem rather than as a request to reinstall every media component.
Administration and system plug-ins validate concrete properties before they bind sockets, emit logs, download remote data or archive a stream., a failure at this layer should be diagnosed from the plug-in configuration and its first lower-level result. In a this result trace, export the exact plug-in property values and record the service identity. While diagnosing it, mMC display text alone can hide binding scope, normalized URLs or inherited defaults. The decisive question is whether the live object and values match that boundary; the base AllStat description alone does not reveal the object generation, selected plug-in or lower-level failure.
A controlled correction
- Capture
0xC00D1586, this result, the exact API/administrative action and the first failure timestamp. - Preserve requested MTU, data protocol, network path MTU, plug-in instance and serialized configuration value.
- confirm that the object still belongs to the current WMServer, publishing-point or presentation generation.
- Perform one isolated experiment: set a value within 36 through 65507 bytes and then validate packet delivery on the actual network path.
- Repeat the original the operation through the same protocol and service account; do not substitute a different client-side test.
- After this result, verify the expected next state and retain any later HRESULT as a separate pipeline result.
Repeat the test with a newly resolved server object; a stale COM pointer can make a correct configuration appear unchanged.
Code-specific failure anatomy
In a representative incident, the server reaches the configured maximum packet size lies outside the WMS multicast writer range and rejects the operation before the caller can safely assume the next stage occurred. The incident record should therefore join requested MTU, data protocol, network path MTU, plug-in instance and serialized configuration value with the object generation and the exact administrative or protocol request.
A useful negative control is set a value within 36 through 65507 bytes and then validate packet delivery on the actual network path. If that change advances the same it call, the result supports this boundary. If it remains, return to the first lower-level event instead of broadening the repair.
The tempting but misleading response is choosing 65507 automatically without considering fragmentation and path MTU. That action does not test the distinction that matters here: port in use concerns socket binding; MTU range is validated before packet sizing. This distinction is also why monitoring should retain the symbolic name instead of storing only a generic COM failure.
Evidence that separates this code
| Evidence | Why it matters for this HRESULT |
|---|---|
| Decisive state | requested MTU, data protocol, network path MTU, plug-in instance and serialized configuration value. |
| Owning object | Record the server, publishing point, playlist, namespace node, plug-in or cache item that returned it, including its creation or restart time. |
| First lower-level result | Preserve the earliest Win32, socket, COM, parser or plug-in event before the HRESULT; later wrappers can map several causes to it. |
| Controlled comparison | Use a known-good object of the same type and vary only the precondition described as “the configured maximum packet size lies outside the WMS multicast writer range”. |
| Security-sensitive data | Log identifiers, lengths, hashes and redacted URLs where possible; do not publish passwords, authorization files or unrestricted client data. |
Reading the second result
| Retest observation | Interpretation |
|---|---|
| The same call still returns it | The rejected precondition has not changed, or the caller is still using an old object/configuration generation. |
| The operation advances and a later code appears | The boundary was cleared. After it, diagnose the new code at its own source, parser, sink, network or client stage. |
| A new object succeeds while the retained object fails | Object lifetime or stale context is part of the incident; update lifecycle handling rather than applying a machine-wide repair. |
| Only one publishing point, playlist, cache key or plug-in fails | The evidence favors object-specific configuration or content over a server-wide outage. |
Changes that do not establish the cause
- choosing 65507 automatically without considering fragmentation and path MTU.
- a successful ping or local file open is not sufficient proof: the failing service account and Windows Media Services object must perform the same operation.
- Do not suppress it or replace it with a generic “media server error”; retain the symbolic code and owning operation in telemetry.
Related codes are different
Primary distinction: port in use concerns socket binding; MTU range is validated before packet sizing.
| Nearby result | Different checkpoint |
|---|---|
NS_E_INVALID_PLAY_STATISTICS | Compare its own symbolic boundary and the first failing call; it must not be grouped automatically with it. |
NS_E_INVALID_LOG_URL | Relative to it, this neighboring result belongs to another state or validation branch even when the user-visible symptom is similar. |
NS_E_LOG_NEED_TO_BE_SKIPPED | Use the object type and operation sequence to determine which result is authoritative. |
Technical references
- Programming System Plug-in Properties
- The HTTP Download Plug-in
- WMS Client Logging Plug-in Properties
- WMS Archive Data Writer Plug-in Properties
- Microsoft HRESULT registry
Close the incident only after it clears on a current object.
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