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MILERR_ALREADY_INITIALIZED
MILERR_ALREADY_INITIALIZED is a Windows Media Integration Layer (MIL) HRESULT. It indicates that initialization was requested for an object that already completed or entered its initialized lifecycle state.
What to check for MILERR_ALREADY_INITIALIZED
- Initialize the object once and update its state through the documented post-initialization methods.
- Check duplicate startup callbacks, retry paths, and constructors that can initialize the same object twice.
- Create a fresh object when reinitialization is required after a device or display reset.
Microsoft documentation about WPF hardware-accelerated rendering
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