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Windows Defender Connection Failed: Best Practices for Protecting Your PC



Use next-gen technologies in Windows Defender Antivirus through cloud-delivered protection -us/windows/security/threat-protection/windows-defender-antivirus/utilize-microsoft-cloud-protection-windows-defender-antivirus




Windows Defender Connection Failedl



Allow connections to the Windows Defender Antivirus cloud service -us/windows/security/threat-protection/windows-defender-antivirus/configure-network-connections-windows-defender-antivirus#allow-connections-to-the-windows-defender-antivirus-cloud-service


Review event logs and error codes to troubleshoot issues with Windows Defender Antivirus -us/windows/security/threat-protection/windows-defender-antivirus/troubleshoot-windows-defender-antivirus


Microsoft MVP Alex Verboon has a nice blog post on Microsoft Defender Cloud Protection via Powershell:Testing Windows Defender MAPS Connectivity with PowerShell -windows-defender-maps-connectivity-with-powershell/


SCCM-Endpoint Protection: Microsoft Defender Advanced Threat Protection (EDR) for Windows 10 (Part 13) -endpoint-protection-microsoft-defender-advanced-threat-protection-edr-for-windows-10-part-13/


SCCM-Endpoint Protection: Microsoft Defender Advanced Threat Protection (EDR) for Windows Server 2019 (Part 14) -endpoint-protection-microsoft-defender-advanced-threat-protection-edr-for-windows-server-2019-part-14/


I am planning to connect on premises servers to azureusing azure arcTo provide the defender Antivirus,VA & Sentinal solutions to on premises servers windows & Linux machinesCan you please help me with the deployment method i can go with to provide the AV,EDR& ASR profiles for the Azure arc enabled servers


Now pay attention to the path above, the numbers in bold will actually change from time to time, this is because it relates to the Defender engine version, that gets periodically updated. More details about the old and new paths here: -us/help/4052623/update-for-windows-defender-antimalware-platform


So whenever implementing Windows Defender, make sure that the service endpoints documented here: -us/windows/security/threat-protection/windows-defender-antivirus/configure-network-connections-windows-defender-antivirus#allow-connections-to-the-windows-defender-antivirus-cloud-service can be accessed by the clients running Windows Defender and are not being blocked.


Finally I managed to get it working. In windows services panel, the windows media player network sharing service was disabled. I just set it to start automatically, then I could run the wifi connection setup successfuly. 2ff7e9595c


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