Strange Virus/Spyware blocked notification on frequently used vendor site

See screen shot above. This Virus warning appears when a user attempts to download an .exe from a frequently used Vendor website. This just started a few days ago. As far as I’m aware we don’t have any content filtering / A/V rules on our firewall device and the vendor domain is whitelisted there as … Read more

Why Windows 10 Blocks some LAN IPs (192.168..)?

– Summarize the problem: Windows 10 does not allow visiting my local LAN IPs (192.168.1.0/24), and some domains (that are defined in my hosts file). Error shows in all browsers (e.g. form chrome: Firewall or antivirus software may have blocked the connection.) – what you’ve tried: I tried to check if chrome is allowed by … Read more

Windows defender real-time protection “disabled”

Initially windows defender was disabled for some reason in Windows server 2016. I enabled it from gpedit.msc by disabling “Turn off windows defender”. When opening Windows defender, it shows real-time protection “disabled”. I went to settings and enabled realtime protection but still defender shows it is disabled. Please see http://i.is.cc/tmZNGl.png I followed the suggestions in … Read more

BSOD Critical_Process_Died after enabling Windows Defender Firewall

Server 2019 1809 17763.914 running Remote Desktop Services and all updates are applied. On reboot, the Windows Defender Firewall is stopped (even though it is set to automatically start) and when I manually start the service (via any command line, windows services, server manager, defender gui etc.) it BSOD with the error of “Critical Processes … Read more

Windows Defenders – Antimalware – Exclude Directory from Scan

I looked at this article: https://www.windowscentral.com/how-exclude-files-and-folders-windows-defender-antivirus-scans, but my Windows 2019 Datacenter server server doesn’t look anything like there screen shot. On my system it looks like this, and all the settings seem to related to firewall as opposed to the anti-virus malware scanner. I’m writing out some rolling log files from an application, and I’m … Read more

MDATP installation in Docker on Linux Image

Was anyone able to install MDATP on a Linux Docker image? We tried CentOS, Debian, and Ubuntu and all have the same issue. I installed MDATP successful when the Linux box is a full host but not in Docker. I am following these instructions: https://docs.microsoft.com/en-us/windows/security/threat-protection/microsoft-defender-atp/linux-install-manually I preceded the installation with: apt-get -y install curl libplist-utils … Read more

What flavor of Defender do I get on my computer

I see many terminologies when it comes to Windows Defender. For example, this document has references to Microsoft Defender Antivirus and also Microsoft Defender for Endpoint. Also, I read a few places about Microsoft Defender Advanced Thread Protection. All of this left me confused. I know that my Windows 10 computer comes with Defender pre-installed. … Read more

How can you connect Azure Cloud Services (Classic) Defender to Azure Security Centre?

Given Azure Cloud Services (Classic, not Extended Support) using Family 6 (Windows 2019). Windows Defender is enabled and scanning files. How can the logs and scan results be surfaced to the Azure Portal, ideally Security Centre / Monitor. “The Microsoft Antimalware Client and Service is installed by default in a disabled state in all supported … Read more

Windows Defender – Windows Server 2019 client onboarding – via squid proxy server

I have prepared Azure environment, VMs:winsrv2019, winsrv2012. Both VMs are deployed in the isolated azure subnet (only traffic to security tools and to proxy server is allowed). In second subnet I deployed Ubuntu 16 proxy squid server, I configured squid, used user and password for authentication, traffic to Windows Defender Security Center web platform is … Read more