Settlers-4-patch-3d-error-initializing-graphic-29 -
The 3D patch attempts to run in a windowed 3D device using D3DDEVICE_CREATION_BEHAVIOR_FLAGS that assume a GDI-compatible backbuffer. On systems with Hardware-Accelerated GPU Scheduling (HAGS) enabled, or when running composited desktop (DWM), the legacy flip chain fails, causing device creation to error with 29.
Thus, error 29 signals that the patch’s CreateDevice call to Direct3D7 or Direct3D8 returned D3DERR_INVALIDCALL , D3DERR_NOTAVAILABLE , or E_FAIL . settlers-4-patch-3d-error-initializing-graphic-29