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NS_E_PLAYLIST_ENTRY_HAS_CHANGED
Diagnosing NS_E_PLAYLIST_ENTRY_HAS_CHANGED in the Windows Media pipeline
This result (0xC00D2EF5) is returned at a command still refers to a playlist entry generation that has already changed. It identifies the failing streaming stage.
A Windows Media streaming request crosses name resolution, proxy selection, protocol negotiation, authentication, session creation and packet delivery before retrying. WMSP and related protocols maintain session state, so a valid TCP connection alone does not establish a usable media session.
Where the failure occurs
at that stage, the component has already accepted the earlier prerequisites but cannot cross the boundary described as a command still refers to a playlist entry generation that has already changed. That distinction matters: success in opening the file, resolving the host or creating a COM object does not prove that this later operation is valid.
For the strongest reproduction, create a fresh streaming session, obtain new session and entry identifiers, and repeat the command without reusing old state. If the same call gets past this point after that single change, the changed precondition is relevant. If it does not, return to the first nested error instead of broadening the repair.
Network and protocol evidence
| Capture | Why it matters |
|---|---|
| Owning call | Record the API method, object identity, thread or callback and timestamp for the reported condition. |
| Values to record | Session identifier, playlist entry identifier and generation, server token, request sequence, reconnect history and the response that invalidated the old state. |
| Comparison case | Use one known-good resource that exercises the same streaming path while changing only the rejected precondition. |
Protocol-preserving retest
- Log
0xC00D2EF5, the exact operation and the first failure time. - Preserve session identifier, playlist entry identifier and generation, server token, request sequence, reconnect history and the response that invalidated the old state before retrying.
- Perform one isolated test: create a fresh streaming session, obtain new session and entry identifiers, and repeat the command without reusing old state.
- Repeat through the same API and protocol path; a different player or local-copy test is useful only as a comparison, not as proof that the failed operation is fixed.
Nearby results are not interchangeable
Main distinction: this HRESULT identifies a specific network or protocol stage and should not be collapsed into a generic connectivity failure.
| Nearby HRESULT | How to compare it |
|---|---|
NS_E_SESSION_NOT_FOUND | the server cannot locate the session identifier supplied by the client |
NS_E_REQUIRE_STREAMING_CLIENT | The resource requires streaming-session semantics unavailable to the current client path |
NS_E_PROXY_ACCESSDENIED | the proxy rejected the client authentication or authorization context |
Misleading actions
- Treating every streaming HRESULT as generic packet loss without separating DNS, connect, response and session phases before retrying.
- Record redacted identifiers, lengths, hashes and protocol fields needed to reproduce the original failure.
Technical references
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