If you are not sure how to fix this frustrating error, this guide will do just that and provide other useful information. Fixing The First Descendant DirectX 12 Error ...

There are a few possible fixes if you were hit with the "DirectX 12 not supported on your system" error in The First Descendant.

If you get DirectX Out of memory, Direct3D could not allocate sufficient memory to complete the call error, follow the solutions mentioned in this post.