What does HRESULT 0xC00D11DF (NS_E_WMP_MULTIPLE_ERROR_IN_PLAYLIST) mean?

Status / error code:

Category:

Constant name:

Source:

Facility:

Operating System:

Description:

A number of queued files cannot be played. To find information about the problem, click the icon next to each file in the List pane.%0

Previous	Next
NS_E_WMP_SERVER_NONEWCONNECTIONS	NS_E_WMP_IMAPI2_ERASE_FAIL

NS_E_WMP_MULTIPLE_ERROR_IN_PLAYLIST

Diagnosing NS_E_WMP_MULTIPLE_ERROR_IN_PLAYLIST in the Windows Media Player playback path

NS_E_WMP_MULTIPLE_ERROR_IN_PLAYLIST (0xC00D11DF) is returned when several queued playlist items failed and the Player returned an aggregate result.

Trace path or URL resolution, proxy and network selection, parser and codec discovery, graph construction, rendering and optional DRM as separate layers. Record what the Player had already completed because later retries often replace the original evidence. The specific rejected condition is several queued playlist items failed and the Player returned an aggregate result.

Playback boundary

AllStat already supplies the standard user-facing description for this HRESULT; this custom block instead isolates the additional technical boundary. Earlier success in file lookup, network connection, parser creation or graph construction does not prove that the later the operation is valid.

Case-specific checkpoint: ordered item list, per-item HRESULT, first failure, successful items and rollover behavior. The controlled comparison for this HRESULT is: open each failed item individually and preserve its specific code before rebuilding the queue.

Closest distinction: NS_E_PLAYLIST_CONTAINS_ERRORS can describe a playlist container with one or more bad entries; this result explicitly summarizes multiple failures.

Capture the first failing layer

Capture	Why it matters for this HRESULT
Object or resource	ordered item list, per-item HRESULT, first failure, successful items and rollover behavior
State snapshot	Record the Player openState/playState or operation phase, object identity and exact timestamp when this result was returned.
First lower result	Keep the earliest Win32, Winsock, COM, parser, codec, DRM or device result that appears before this result.
Comparison record	Use one known-good case that follows the same API, protocol and component path while changing only the rejected precondition.

Controlled playback comparison

Start from the original call and log 0xC00D11DF together with its object and operation phase.
Collect ordered item list, per-item HRESULT, first failure, successful items and rollover behavior before changing the machine.
Use this single-variable test: open each failed item individually and preserve its specific code before rebuilding the queue.
repeat on a fresh object if the original predates a configuration, device or resource change.
validate the expected next operation, not just initial open or object creation.

How to interpret the retest

Retest outcome	Interpretation
Same this result on the same object	The governing state or value is unchanged, or the caller is reusing an object created before the relevant change.
Fresh object succeeds	Lifetime, cached configuration or stale playlist/graph state contributed to this result.
A later HRESULT appears	The rejected condition — several queued playlist items failed and the Player returned an aggregate result — was cleared for this HRESULT; diagnose the new code at its own layer.
Only one item or endpoint fails for this HRESULT	The evidence favors resource-specific data, rights, routing or device state rather than a global Player failure.

Actions that obscure the cause

applying one fix to all entries without classifying their individual errors.
Do not discard the first occurrence by repeatedly invoking Play, open, save or retry; later events can replace its original state.
do not publish credentials, private URLs, license material or complete protected-content headers; retain only redacted identifiers, lengths, hashes and protocol fields.

Technical references

Retain before-and-after evidence for this HRESULT so object recreation or content replacement is not mistaken for random retry success.

Looking for a different code? Search another status or error code.