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NS_E_DEVICE_DISCONNECTED
Where this result occurs in the Player workflow
NS_E_DEVICE_DISCONNECTED (0xC00D0FA2) marks using a portable-device object after its physical connection was removed. Keep this HRESULT attached to the producing operation even when the Player shows a broader message.
Mechanism
A device shown in Explorer can still disappear from the Player’s WMDM session or reject a media format, filename, directory operation or storage request. A representative way to reach this result is that the cable is removed while a queued sync item still holds the old interface.
State snapshot
| Evidence | Why it matters |
|---|---|
| Producing object and operation | PnP instance and interface path, WMDM service-provider CLSID, device/partnership ID, connection generation, storage object and capacity, format-support result, firmware version, operation callback and first device or transport HRESULT |
| Key observation | PnP removal event, device instance ID, connection generation and outstanding operation |
| Controlled comparison | Repeat the producing call after changing only this condition: reconnect and re-enumerate the device before resuming with a new object. |
Controlled diagnostic sequence
- Capture
0xC00D0FA2, the exact Player/API operation and the first timestamp at which it appears. - Save PnP removal event, device instance ID, connection generation and outstanding operation; do this before ejecting media, reconnecting a device, canceling a job or rebuilding the Player object.
- Correlate the result with PnP instance and interface path, WMDM service-provider CLSID, device/partnership ID, connection generation, storage object and capacity, format-support result, firmware version, operation callback and first device or transport HRESULT.
- Reproduce once with the original source and destination, then apply only this change: reconnect and re-enumerate the device before resuming with a new object.
- Start a fresh operation and verify that the original call advances without returning
NS_E_DEVICE_DISCONNECTED.
Nearby codes with different owners
| Related result | Different condition |
|---|---|
NS_E_DEVICE_NOT_SUPPORT_FORMAT | checking whether the device advertises support for the item’s media format |
NS_E_DEVICE_IS_NOT_READY | opening device storage before the service provider reports a ready state |
NS_E_PDA_UNSUPPORTED_FORMAT | validating a portable-device operation against the object’s format |
Focused correction
For this occurrence, reconnect and re-enumerate the device before resuming with a new object. Recreate only the object that produced it and repeat the original operation against the same controlled input.
During verification, do not assume the old interface pointer remains valid after reconnect; Re-enumerate the device and storage objects and correlate the failure with the same connection generation.
Discriminating evidence: Correlate the device-removal notification, device identifier and last successful I/O with this HRESULT. This result requires a previously available device to become disconnected; failure to discover any portable device in the first place is a different condition.
Technical references
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