Re: joining server error DXGI-ERROR-INVALID-CALL

Either your GPU is on it's way out or the DirectX files are corrupted (which is doubtful).

Can try installing the game again by doing a clean install might fix the issue but I've seen this happen many times when a GPU is failing. Will work fine in Windows and play videos all day long but soon as you try and play a game it crashes with various DirectX errors.