Windows 10: how ?

how do i fix my microsoft threat protections ? Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\PolicyManager\default\Defender\AllowUserUIAccess now what btw this is from rigestry what do i do next this is what the microsoft thing told me what to do but it cut out what should i do next in this exact page ??? and how do i call or get in contact with I.T

:)