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| NS_E_WMP_HWND_NOTFOUND | NS_E_BKGDOWNLOAD_COMPLETECANCELLEDJOB |
NS_E_BKGDOWNLOAD_WRONG_NO_FILES
NS_E_BKGDOWNLOAD_WRONG_NO_FILES: a Player-owned background download job has an unexpected file count for the operation
NS_E_BKGDOWNLOAD_WRONG_NO_FILES (0xC00D125D) identifies a specific Windows Media/platform boundary: a Player-owned background download job has an unexpected file count for the operation. Keep this stage visible instead of collapsing it into a generic playback, network, or configuration failure.
Evidence to preserve
Capture BITS job ID, enumerated file list, expected package/file count, job owner, and whether another component modified the job after WMP created it.
Controlled verification
Recreate the job through the owning Player path with the expected file set; do not patch the count after the job is already active.
Technical references
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