HRESULT 0x887A002C (DXGI_ERROR_NAME_ALREADY

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DXGI_ERROR_NAME_ALREADY_EXISTS the application is trying to create a shared handle using a name that is already associated with some other resource.

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DXGI_ERROR_ACCESS_DENIED	DXGI_ERROR_SDK_COMPONENT_MISSING

DXGI_ERROR_NAME_ALREADY_EXISTS

DXGI_ERROR_NAME_ALREADY_EXISTS means that a shared-resource name supplied to IDXGIResource1::CreateSharedHandle is already associated with another resource. It is a naming collision in the application or cooperating processes, not an indication that the graphics adapter is unavailable.

How to prevent collisions

Use a unique naming scheme whose scope and lifetime are documented for every producer and consumer.
Include a process, session, or generation component when independently running instances must not share the same name.
Use an unnamed handle when cross-process discovery by name is not actually required.

Do not overwrite by assumption

A name can identify a resource owned by another live component. Decide whether the existing resource should be opened through an agreed protocol or whether the new resource must use a different name; do not assume it is safe to replace the current owner.

Microsoft: IDXGIResource1::CreateSharedHandle · Microsoft: DXGI error codes

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