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NS_E_NO_DEVICE
NS_E_NO_DEVICE — 0xC00D0071
Diagnosing this result
This result identifies this Windows Media Services boundary: no device driver is present on the system.
Why this boundary matters
This HRESULT is tied to one multimedia device/provider boundary. Preserve the physical/logical device identity, selected channel or format, provider capabilities and the first native open/control result before changing hardware or format together.
Evidence to collect
| Field | What to preserve |
|---|---|
| Device | Concrete device/channel identity and the server object that selected it. |
| Request | Requested format, channel or operation parameters. |
| Provider | Driver/provider identity and capability enumeration for the same device generation. |
| Native result | First open/control/format error returned by the device layer. |
Decision rule
Keep the hardware identity fixed during the first retest; changing both device and format cannot show whether the original provider/capability state caused the error.
Focused test
Record the device class or interface requested by the server and the enumeration result; verify the required driver/device is present before changing media settings.
Verification
Repeat the operation with the same device identity and requested channel/format after correcting one provider or capability precondition. A different device is only a control and does not prove the original device state was repaired.
Technical references
- Windows Media Services 9 Series SDK
- Windows Media Services protocol relationships
- Microsoft HRESULT values for the Windows Media namespace
The useful success criterion is not merely the disappearance of this result. Confirm that the same server action completes and that the expected content or object remains available through the next pipeline stage.
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