How to disable Microsoft Defender in Windows 10 build 20H1 (19041.450)

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Windows 10 build 20H1 (19041.450) introduced a change that prevents the user from permanently disabling Microsoft Defender. The inability to disable Microsoft Defender may negatively impact scores when running BAPCo benchmarks. Microsoft has provided documentation for users that may wish to roll back their instance of Microsoft Defender to a previous version.