HRESULT 0xC00D10BE (NS_E_DISPLAY_MODE_CHANGE

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Operating System:

Description:

Windows Media Player failed to change the screen mode for full-screen video playback.%0

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NS_E_DDRAW_GENERIC	NS_E_PLAYLIST_CONTAINS_ERRORS

NS_E_DISPLAY_MODE_CHANGE_FAILED

Diagnosing NS_E_DISPLAY_MODE_CHANGE_FAILED in Player settings or the playback graph

NS_E_DISPLAY_MODE_CHANGE_FAILED (0xC00D10BE) is returned when the Player could not switch the display device into the mode requested for full-screen playback.

For NS_E_DISPLAY_MODE_CHANGE_FAILED, separate Network-object configuration, graph capabilities, graphics presentation, stream selection and COM ownership before changing playback content. For NS_E_DISPLAY_MODE_CHANGE_FAILED, the actionable checkpoint is the Player could not switch the display device into the mode requested for full-screen playback. Although NS_E_DISPLAY_MODE_CHANGE_FAILED may appear as “cannot play” or “cannot save,” it belongs to a specific object state that should be diagnosed directly.

Configuration or graph boundary

AllStat already supplies the standard user-facing description for NS_E_DISPLAY_MODE_CHANGE_FAILED; 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 NS_E_DISPLAY_MODE_CHANGE_FAILED operation is valid.

Case-specific checkpoint: current and requested resolution, refresh rate, color depth, multi-monitor topology, exclusive-mode owner and driver result. The controlled comparison for NS_E_DISPLAY_MODE_CHANGE_FAILED is: use windowed playback first, then request a display mode already listed by the active adapter.

Closest distinction: NS_E_WMP_GOFULLSCREEN_FAILED is the Player-level full-screen operation; this code identifies the display-mode transition beneath it.

State to capture before changing settings

Capture	Why it matters for `NS_E_DISPLAY_MODE_CHANGE_FAILED`
Object or resource	current and requested resolution, refresh rate, color depth, multi-monitor topology, exclusive-mode owner and driver result
State snapshot	Record the Player openState/playState or operation phase, object identity and exact timestamp when NS_E_DISPLAY_MODE_CHANGE_FAILED was returned.
First lower result	Keep the earliest Win32, Winsock, COM, parser, codec, DRM or device result that appears before NS_E_DISPLAY_MODE_CHANGE_FAILED.
Comparison record	For NS_E_DISPLAY_MODE_CHANGE_FAILED, use one known-good case that follows the same API, protocol and component path while changing only the rejected precondition.

One-variable verification

Capture the resource identity and current and requested resolution, refresh rate, color depth, multi-monitor topology, exclusive-mode owner and driver result.
For NS_E_DISPLAY_MODE_CHANGE_FAILED, verify that the caller uses the current Playlist, Media, Network, graph, device or DRM object generation.
Run the narrow experiment: use windowed playback first, then request a display mode already listed by the active adapter.
Do not mix the NS_E_DISPLAY_MODE_CHANGE_FAILED experiment with a codec pack, Player reset or broad registry cleanup.
After NS_E_DISPLAY_MODE_CHANGE_FAILED, treat a new specific HRESULT as evidence that this boundary was cleared.

Reading the next state

Retest outcome	Interpretation
Same NS_E_DISPLAY_MODE_CHANGE_FAILED on the same object	For NS_E_DISPLAY_MODE_CHANGE_FAILED, 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 NS_E_DISPLAY_MODE_CHANGE_FAILED.
A later HRESULT appears	The rejected condition — the Player could not switch the display device into the mode requested for full-screen playback — was cleared for NS_E_DISPLAY_MODE_CHANGE_FAILED; diagnose the new code at its own layer.
Only one item or endpoint fails for NS_E_DISPLAY_MODE_CHANGE_FAILED	For NS_E_DISPLAY_MODE_CHANGE_FAILED, the evidence favors resource-specific data, rights, routing or device state rather than a global Player failure.

Actions that obscure the cause

changing the media file extension.
Do not discard the first NS_E_DISPLAY_MODE_CHANGE_FAILED occurrence by repeatedly invoking Play, open, save or retry; later events can replace its original state.
For NS_E_DISPLAY_MODE_CHANGE_FAILED, do not publish credentials, private URLs, license material or complete protected-content headers; retain only redacted identifiers, lengths, hashes and protocol fields.

Technical references

The NS_E_DISPLAY_MODE_CHANGE_FAILED fix is demonstrated by the same Player path succeeding with the same resource, not by another application opening it.

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