======Microsoft - Windows - Defender - Antivirus====== [[https://www.microsoft.com/en-us/wdsi/defenderupdates|Microsoft Security Intelligence - Security intelligence updates for Microsoft Defender Antivirus and other Microsoft antimalware]] [[https://learn.microsoft.com/en-us/defender-endpoint/microsoft-defender-antivirus-updates|Microsoft Defender - Microsoft Defender Antivirus security intelligence and product updates]] \\ [[https://learn.microsoft.com/en-us/defender-endpoint/configure-network-connections-microsoft-defender-antivirus|Microsoft Defender - Configure and validate Microsoft Defender Antivirus network connections]] \\ [[https://learn.microsoft.com/en-us/defender-endpoint/manage-protection-updates-microsoft-defender-antivirus|Microsoft Defender - Manage the sources for Microsoft Defender Antivirus protection updates]] [[https://learn.microsoft.com/en-us/defender-endpoint/deploy-manage-report-microsoft-defender-antivirus|Microsoft Defender - Deploy, manage, and report on Microsoft Defender Antivirus]] \\ [[https://learn.microsoft.com/en-us/defender-endpoint/deployment-vdi-microsoft-defender-antivirus|Microsoft Defender - Configure Microsoft Defender Antivirus on a remote desktop or virtual desktop infrastructure environment]] =====Notes===== ====Firewall URLs==== Allowing access to the following URLs in the firewall, in addition to the [[microsoft:windows:activation#license_activation_url|License Activation URLs]], and the [[microsoft:windows:update#windows_update_urls|Windows Update URLs]] seems to be enough to allow (a heavily outdated) Defender Antivirus to update it's Security Intelligence definition patterns: crl.microsoft.com ctldl.windowsupdate.com definitionupdates.microsoft.com download.windowsupdate.com fe3cr.delivery.mp.microsoft.com go.microsoft.com www.microsoft.com Source:[[https://learn.microsoft.com/en-us/defender-endpoint/configure-network-connections-microsoft-defender-antivirus|Microsoft Defender - Configure and validate Microsoft Defender Antivirus network connections]]