Download x86: http://download.microsoft.com/download/e/d/0/ed099d5e-dc60-4740-8747-1c72f053b800/WindowsDefender.msi
Download x64: http://download.microsoft.com/download/d/6/d/d6d8f548-69f2-4c5d-84be-a64fe41cc87a/WindowsDefenderX64.msi
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