Devices using either the Windows built-in antivirus or another security solution can benefit from these updates.
Defender updates also contain critical performance fixes that will improve the user experience. The devices on which these deployments are made are inadequately protected until they receive the first antimalware software update. This is because the OS installation images may contain outdated antimalware software binaries. The first hours of a newly installed Windows deployment can leave the system vulnerable because of a Microsoft Defender protection gap.
