| Previous | Next |
| NS_E_CACHE_ORIGIN_SERVER_NOT_FOUND | NS_E_CACHE_NOT_BROADCAST |
NS_E_CACHE_ORIGIN_SERVER_TIMEOUT
How to investigate NS_E_CACHE_ORIGIN_SERVER_TIMEOUT
Mechanism and scope
NS_E_CACHE_ORIGIN_SERVER_TIMEOUT (0xC00D13EE) marks the cache proxy selected an origin but did not receive the required response before its timeout. For NS_E_CACHE_ORIGIN_SERVER_TIMEOUT, although the visible symptom may be interrupted playback, this HRESULT is raised at an administrative or distribution checkpoint.
For NS_E_CACHE_ORIGIN_SERVER_TIMEOUT, the cache/proxy layer first applies policy, then decides whether to serve local content, revalidate it, contact an origin server, proxy it, redirect the client or reject the request. When NS_E_CACHE_ORIGIN_SERVER_TIMEOUT is returned, those decisions are separate from ordinary player buffering. In a NS_E_CACHE_ORIGIN_SERVER_TIMEOUT trace, keep the cache key, origin validators and policy decision together. While diagnosing NS_E_CACHE_ORIGIN_SERVER_TIMEOUT, a cache proxy behaves both as a server to the player and as a client to the origin. For NS_E_CACHE_ORIGIN_SERVER_TIMEOUT, 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.
What to record before changing anything
| Evidence | Why it matters for NS_E_CACHE_ORIGIN_SERVER_TIMEOUT |
|---|---|
| Decisive state | origin address, response timing, cache key, protocol and first socket event. |
| Owning object | Record the server, publishing point, playlist, namespace node, plug-in or cache item that returned NS_E_CACHE_ORIGIN_SERVER_TIMEOUT, 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 NS_E_CACHE_ORIGIN_SERVER_TIMEOUT. |
| Controlled comparison | Use a known-good object of the same type and vary only the precondition described as “the cache proxy selected an origin but did not receive the required response before its timeout”. |
| Security-sensitive data | For NS_E_CACHE_ORIGIN_SERVER_TIMEOUT, log identifiers, lengths, hashes and redacted URLs where possible; do not publish passwords, authorization files or unrestricted client data. |
Do not merge nearby HRESULT values
Primary distinction: not found occurs before a usable origin endpoint exists; timeout occurs after an endpoint was selected.
| Nearby result | Different checkpoint |
|---|---|
NS_E_CACHE_NOT_BROADCAST | Compare its own symbolic boundary and the first failing call; it must not be grouped automatically with NS_E_CACHE_ORIGIN_SERVER_TIMEOUT. |
NS_E_CACHE_ORIGIN_SERVER_NOT_FOUND | Relative to NS_E_CACHE_ORIGIN_SERVER_TIMEOUT, this neighboring result belongs to another state or validation branch even when the user-visible symptom is similar. |
NS_E_CACHE_CANNOT_BE_CACHED | For NS_E_CACHE_ORIGIN_SERVER_TIMEOUT, use the object type and operation sequence to determine which result is authoritative. |
Code-specific failure anatomy
In a representative NS_E_CACHE_ORIGIN_SERVER_TIMEOUT incident, the server reaches the cache proxy selected an origin but did not receive the required response before its timeout and rejects the operation before the caller can safely assume the next stage occurred. The incident record should therefore join origin address, response timing, cache key, protocol and first socket event with the object generation and the exact administrative or protocol request.
A useful negative control is repeat one request with the same origin while tracing connect, headers and first media bytes; fix the delayed stage rather than only extending every timeout. If that change advances the same NS_E_CACHE_ORIGIN_SERVER_TIMEOUT call, the result supports this boundary. If NS_E_CACHE_ORIGIN_SERVER_TIMEOUT remains, return to the first lower-level event instead of broadening the repair.
The tempting but misleading response is marking stale content fresh without confirming origin state. That action does not test the distinction that matters here: not found occurs before a usable origin endpoint exists; timeout occurs after an endpoint was selected. For NS_E_CACHE_ORIGIN_SERVER_TIMEOUT, this distinction is also why monitoring should retain the symbolic name instead of storing only a generic COM failure.
A controlled correction
- Capture
0xC00D13EE,NS_E_CACHE_ORIGIN_SERVER_TIMEOUT, the exact API/administrative action and the first failure timestamp. - Preserve origin address, response timing, cache key, protocol and first socket event.
- For
NS_E_CACHE_ORIGIN_SERVER_TIMEOUT, confirm that the object still belongs to the current WMServer, publishing-point or presentation generation. - Perform one isolated experiment: repeat one request with the same origin while tracing connect, headers and first media bytes; fix the delayed stage rather than only extending every timeout.
- Repeat the original
NS_E_CACHE_ORIGIN_SERVER_TIMEOUToperation through the same protocol and service account; do not substitute a different client-side test. - After
NS_E_CACHE_ORIGIN_SERVER_TIMEOUT, verify the expected next state and retain any later HRESULT as a separate pipeline result.
For NS_E_CACHE_ORIGIN_SERVER_TIMEOUT, for automated tests, assert both the HRESULT and the resulting publishing-point, playlist, plug-in or archive state.
Changes that do not establish the cause
- marking stale content fresh without confirming origin state.
- For
NS_E_CACHE_ORIGIN_SERVER_TIMEOUT, avoid changing the publishing point, protocol, content and plug-in set in one test. WhenNS_E_CACHE_ORIGIN_SERVER_TIMEOUTis returned, such a test cannot show which precondition cleared the code. - Do not suppress
NS_E_CACHE_ORIGIN_SERVER_TIMEOUTor replace it with a generic “media server error”; retain the symbolic code and owning operation in telemetry.
Verification outcomes
| Retest observation | Interpretation |
|---|---|
The same call still returns NS_E_CACHE_ORIGIN_SERVER_TIMEOUT | For NS_E_CACHE_ORIGIN_SERVER_TIMEOUT, 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 NS_E_CACHE_ORIGIN_SERVER_TIMEOUT boundary was cleared. After NS_E_CACHE_ORIGIN_SERVER_TIMEOUT, diagnose the new code at its own source, parser, sink, network or client stage. |
| A new object succeeds while the retained object fails | For NS_E_CACHE_ORIGIN_SERVER_TIMEOUT, 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 | For NS_E_CACHE_ORIGIN_SERVER_TIMEOUT, the evidence favors object-specific configuration or content over a server-wide outage. |
Technical references
- Windows Media Server Cache Proxy Functionality
- Creating Cache Proxy Plug-ins
- Windows Media Services HTTP Proxy Server Interaction
- Microsoft HRESULT registry
Close the incident only after NS_E_CACHE_ORIGIN_SERVER_TIMEOUT clears on a current object.
Looking for a different code? Search another status or error code.