Alternatives to Windows Defender for all platforms with any license

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Windows Defender Comments

Comment by RemovedUser
about Windows Defender · Dec 2017 · Helpful Not helpful -1 Helpful Report as spam

How enable this app?

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Comment by s0me0ne
about Windows Defender · Jun 2011 · Helpful Not helpful -8 Helpful Report as spam

Its kinda old, but still gets updated. I use this alongside Avast.

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If Avast is Installed, Windows Defender will be Disabled

It depends. In Windows 7 Windows Defender is an anti-spyware that runs independently from antivirus, and in Windows 8/10 it's a built-in antivirus, a successor of MS Security Essentials.