How to use Microsoft Defender, the antivirus security program on Windows 10

Formerly known as Windows Defender, Microsoft Defender is an antivirus protection program that's included with Windows 10.
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Windows Defender misidentifies key driver, disrupting popular PC monitoring tools

What just happened? PC gamers recently encountered an unexpected issue when their computers triggered Windows Defender alerts due to a kernel-level driver called WinRing0. This software, used by ...