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Sophos for VMs not recognized by Windows Defender?

I use a Windows 2016 terminal server on a daily basis but this morning I got an alert telling me that Windows Defender needs to scan it. I built this VM a few weeks ago and immediately installed Sophos for Virtual Environments. This is the first time I've received this alert, however. Has anyone else seen this behavior?

-Gary

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0 Haridoss Sreenivasan over 8 years ago

Hi Gary,

Am afraid this is not an issue with Sophos AV, as the Windows Defender is not detecting the Sophos on VMs I request you to check with Microsoft as they may have a solution.
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0 gdriggs over 8 years ago in reply to Haridoss Sreenivasan

This is not consistent with the behavior of the full client on desktops or servers. When that is installed, Windows Defender is turned off. Nowhere in the installation document or the Sophos Central online help does it say we should be turning off Windows Defender manually to install the VM agent. Also, this is not an issue on any version of Windows Server prior to 2016.
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0 gdriggs over 8 years ago in reply to Haridoss Sreenivasan

This is not consistent with the behavior of the full client on desktops or servers. When that is installed, Windows Defender is turned off. Nowhere in the installation document or the Sophos Central online help does it say we should be turning off Windows Defender manually to install the VM agent. Also, this is not an issue on any version of Windows Server prior to 2016.
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0 QC over 8 years ago in reply to gdriggs

Hello gdriggs,

when that is installed, Windows Defender is turned off
this is not something the Sophos client does, instead Windows Defender is disabled automatically. This behaviour exists in all desktop and Windows Server prior to 2016 versions. In Windows Server 2016, Windows Defender AV will not disable itself if you are running another antivirus product.
Haven't read all of this Microsoft doc though so I can't say why this has been changed or whether there are potential issues if you don't turn off WD.

Christian
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0 gdriggs over 8 years ago in reply to QC

Oh wow, good find! I didn't imagine that this could be a "feature" of Windows 2016.
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Sophos for VMs not recognized by Windows Defender?

Submitted a Tech Support Case lately from the Support Portal?