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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.
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.
- Perform one isolated experiment: set a value within 36 through 65507 bytes and then validate packet delivery on the actual network path.
Repeat the test with a newly resolved server object; a stale COM pointer can make a correct configuration appear unchanged.
Code-specific failure anatomy
A representative occurrence is when the configured maximum packet size lies outside the WMS multicast writer range. Capture requested MTU, data protocol, network path MTU, plug-in instance and serialized configuration value together with the object instance and the exact administrative or protocol request.
For a useful negative control, set a value within 36 through 65507 bytes and then validate packet delivery on the actual network path.
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.
Evidence that separates this code
| 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”. |
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.
Related codes are different
Primary distinction: port in use concerns socket binding; MTU range is validated before packet sizing.
| Nearby result | Different condition |
|---|---|
NS_E_INVALID_PLAY_STATISTICS | a client logging request contains statistics fields or values that fail WMS logging validation. |
NS_E_INVALID_LOG_URL | the multicast logging URL does not match the HTTP endpoint form expected by the logging path. |
NS_E_LOG_NEED_TO_BE_SKIPPED | the logging pipeline intentionally decides not to persist the current log record. |
Technical references
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