Microsoft Defender update for Windows operating system installation ...
The first hours of a newly installed Windows deployment can leave the system vulnerable because of a Microsoft Defender protection gap. This is because the OS installation images may contain outdated antimalware software binaries.
Which version of DirectX is on your PC? - Microsoft Support
To get the latest version of DirectX for your version of Windows, use Windows Update. If you have Windows 10 or 11, then you already have the latest version of DirectX installed.