Sniper: Ghost Warrior 2 uses DirectX 9 and 11. Modern Windows 10/11 ships with DirectX 12, but older DX9 files are often missing or corrupted.
Alternative: Copy d3dx9_43.dll from a working friend’s PC (same Windows version) into your SysWOW64 folder, then run regsvr32 d3dx9_43.dll in Command Prompt (Admin).
Corrupted game files can trigger this error.
For Steam:
Sometimes, Windows 10/11 is "too new" for the game’s executable.
If the game’s own binaries are corrupted, you’ll get this error.