HRESULT 0x887A000C (DXGI_ERROR_GRAPHICS_VIDPN_SOURCE_IN

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Fullscreen mode could not be achieved because the specified output was already in use.

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DXGI_ERROR_FRAME_STATISTICS_DISJOINT	DXGI_ERROR_DRIVER_INTERNAL_ERROR

DXGI_ERROR_GRAPHICS_VIDPN_SOURCE_IN_USE

DXGI_ERROR_GRAPHICS_VIDPN_SOURCE_IN_USE means that exclusive ownership of a display output could not be obtained because another application or device already owns it. It is most relevant to fullscreen or display-mode transitions, not to ordinary windowed rendering.

What to inspect

The target output, current fullscreen owner, and whether another component in the same process is attempting a conflicting transition.
Recent monitor connection, desktop switch, Remote Desktop, and display-mode events.
Whether the application truly needs exclusive ownership or can render through a windowed or borderless path.

Do not fight the current owner

Release any ownership held by the application, wait for the system state to settle, and retry only through a defined transition path. Repeated forced fullscreen changes can make the user experience worse without resolving the ownership conflict.

Microsoft: DXGI error codes · Microsoft: IDXGISwapChain::SetFullscreenState

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