Should I deactivate Windows Defender on Windows Server 2016/2019 after installing F-Secure Email and

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Customer_CareCustomer_Care Posts: 548 F-Secure Employee

Issue:

I've Installed  F-Secure Email and Server Security but Windows Defender Real-time Protection is still on. Should I deactivate it when I'm using the F-Secure product?

Resolution:

Yes, Windows Defender should be deactivated when using F-Secure Email and Server Security. Multiple Anti-Virus products running at the same time may cause conflicts.

On Windows Server 2016/2019, Windows Defender will not enter passive or disabled mode if you install a third-party antivirus.

After installing a third-party antivirus you should uninstall Windows Defender AV on Windows Server 2016 to prevent problems caused by having multiple antivirus products installed on a machine.

If you are Using Windows Server, version 1803 and Windows 2019, you can enable passive mode by setting this registry key:

Path: HKLM\SOFTWARE\Policies\Microsoft\Windows Advanced Threat Protection
Name: ForceDefenderPassiveMode
Value: 1

Article no: 000002236

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