[{"data":1,"prerenderedAt":295},["ShallowReactive",2],{"doku:en:richtlinien-anhang\u002Fhilfe-microsoft-policies-windowsdefender-disableblockatfirstseen":3},{"seite":4,"start":40,"leiste":41,"bereich":294,"zurueck":294,"weiter":294},{"sprache":5,"rel":6,"zu":7,"id":8,"titel":9,"titelHtml":9,"beschreibung":10,"kennzeile":11,"imMenue":12,"html":13,"ueberschriften":14},"en","richtlinien-anhang\u002Fhilfe-microsoft-policies-windowsdefender-disableblockatfirstseen","\u002Fen\u002Fdocumentation\u002Frichtlinien-anhang\u002Fhilfe-microsoft-policies-windowsdefender-disableblockatfirstseen","referenz-hilfe-microsoft-policies-windowsdefender-disableblockatfirstseen","Configure the 'Block at First Sight' feature","This `REG_DWORD` value controls the Microsoft Defender Antivirus Block at First Sight feature.","since 0.9.8.11",false,"\u003Ch2 id=\"purpose\">Purpose\u003C\u002Fh2>\n\u003Cdetails class=\"doku-klappbox\">\u003Csummary>Show registry keys (1)\u003C\u002Fsummary>\u003Cdiv class=\"doku-klappbox-inhalt\">\n\u003Cul>\n\u003Cli>\u003Ccode>HKLM\\Software\\Policies\\Microsoft\\Windows Defender\\Spynet\\DisableBlockAtFirstSeen\u003C\u002Fcode>\u003C\u002Fli>\n\u003C\u002Ful>\n\u003C\u002Fdiv>\u003C\u002Fdetails>\n\u003Cp>This \u003Ccode>REG_DWORD\u003C\u002Fcode> value controls the Microsoft Defender Antivirus Block at First Sight feature. Because the value name begins with \u003Ccode>Disable\u003C\u002Fcode>, its logic is inverted: \u003Ccode>0\u003C\u002Fcode> turns the feature on, whereas \u003Ccode>1\u003C\u002Fcode> turns it off. Consequently, the Enabled state of the associated Group Policy turns on the feature even though it uses the value \u003Ccode>0\u003C\u002Fcode>.\u003C\u002Fp>\n\u003Cp>When the feature is active, Microsoft Defender Antivirus consults the cloud protection service before allowing suspicious, previously unseen content from the Internet or Internet zone to run or be accessed. It can apply to executable files and nonportable executable content such as JavaScript, VBScript, and macros. For executable files, Defender can initially submit the file hash for a cloud-based assessment.\u003C\u002Fp>\n\u003Cp>If the cloud service can't reach a verdict, Microsoft Defender Antivirus temporarily locks the file and can upload a copy for further analysis. The resulting verdict determines whether the file is allowed or blocked as a threat.\u003C\u002Fp>\n\u003Ch2 id=\"notes\">Notes\u003C\u002Fh2>\n\u003Ch3 id=\"additional-effects\">Additional effects\u003C\u002Fh3>\n\u003Cp>Block at First Sight can substantially shorten the time required to detect and block new malware compared with relying only on locally available security intelligence. The value doesn't independently change cloud protection or sample-submission settings. In particular, setting \u003Ccode>DisableBlockAtFirstSeen\u003C\u002Fcode> to \u003Ccode>1\u003C\u002Fcode> doesn't automatically turn off those separate capabilities.\u003C\u002Fp>\n\u003Ch3 id=\"security\">Security\u003C\u002Fh3>\n\u003Cp>With \u003Ccode>DisableBlockAtFirstSeen = 1\u003C\u002Fcode>, the additional cloud check before first use of affected content doesn't occur. This lowers protection against new threats that local security intelligence doesn't yet recognize. The value by itself doesn't completely disable Defender real-time protection or cloud protection.\u003C\u002Fp>\n\u003Cp>When the feature is active, file hashes and, where further analysis is required, copies of files can be sent to Microsoft's cloud service. The separate sample-submission policy determines which samples may be submitted automatically.\u003C\u002Fp>\n\u003Ch3 id=\"possible-side-effects\">Possible side effects\u003C\u002Fh3>\n\u003Cp>Suspicious but legitimate files that haven't been seen before can remain temporarily unavailable while cloud analysis is in progress. The delay depends in part on the configured cloud-block timeout and the availability of the cloud protection service.\u003C\u002Fp>\n\u003Ch3 id=\"notes-1\">Notes\u003C\u002Fh3>\n\u003Cp>The feature depends on several other protection components. Cloud protection or MAPS membership and real-time protection must be active, and scanning of downloaded files and attachments must be enabled.\u003C\u002Fp>\n\u003Cp>For sample submission, values \u003Ccode>1\u003C\u002Fcode> (Send safe samples) and \u003Ccode>3\u003C\u002Fcode> (Send all samples) support full operation. Value \u003Ccode>0\u003C\u002Fcode> (Always prompt) lowers the device's protection state, while value \u003Ccode>2\u003C\u002Fcode> (Never send) prevents Block at First Sight from functioning.\u003C\u002Fp>\n\u003Cp>Changes to this policy setting might not be applied while tamper protection is enabled.\u003C\u002Fp>\n\u003Ch3 id=\"microsoft-documentation\">Microsoft documentation\u003C\u002Fh3>\n\u003Cp>\u003Ca href=\"https:\u002F\u002Flearn.microsoft.com\u002Fen-us\u002Fwindows\u002Fclient-management\u002Fmdm\u002Fpolicy-csp-admx-microsoftdefenderantivirus#disableblockatfirstseen\">Microsoft Learn: ADMX_MicrosoftDefenderAntivirus Policy CSP – DisableBlockAtFirstSeen\u003C\u002Fa>\u003C\u002Fp>\n\u003Cp>\u003Ca href=\"https:\u002F\u002Flearn.microsoft.com\u002Fen-us\u002Fdefender-endpoint\u002Fconfigure-block-at-first-sight-microsoft-defender-antivirus\">Microsoft Learn: Configure block at first sight in Microsoft Defender Antivirus\u003C\u002Fa>\u003C\u002Fp>\n\u003Ch2 id=\"see-also\">See also\u003C\u002Fh2>\n\u003Cul>\n\u003Cli>\u003Ca href=\"\u002Fen\u002Fdocumentation\u002Frichtlinien-anhang\u002Frichtlinien-virenschutz-angriffsflaechen#e-fbe1af3d7f\">Entry in the reference\u003C\u002Fa>\u003C\u002Fli>\n\u003C\u002Ful>\n",[15,19,22,26,29,32,34,37],{"ebene":16,"id":17,"text":18},2,"purpose","Purpose",{"ebene":16,"id":20,"text":21},"notes","Notes",{"ebene":23,"id":24,"text":25},3,"additional-effects","Additional effects",{"ebene":23,"id":27,"text":28},"security","Security",{"ebene":23,"id":30,"text":31},"possible-side-effects","Possible side effects",{"ebene":23,"id":33,"text":21},"notes-1",{"ebene":23,"id":35,"text":36},"microsoft-documentation","Microsoft documentation",{"ebene":16,"id":38,"text":39},"see-also","See also","\u002Fen\u002Fdocumentation",[42,62,74,82,130,150,166,182,206,222,238],{"titel":43,"pfad":44,"seiten":45},"Getting started","erste-schritte",[46,50,54,58],{"rel":47,"titel":48,"zu":49},"erste-schritte\u002Fwas-ist-setup-foundry","Setup Foundry","\u002Fen\u002Fdocumentation\u002Ferste-schritte\u002Fwas-ist-setup-foundry",{"rel":51,"titel":52,"zu":53},"erste-schritte\u002Finstallation","Installing Setup Foundry","\u002Fen\u002Fdocumentation\u002Ferste-schritte\u002Finstallation",{"rel":55,"titel":56,"zu":57},"erste-schritte\u002Fschnellstart","Quick start","\u002Fen\u002Fdocumentation\u002Ferste-schritte\u002Fschnellstart",{"rel":59,"titel":60,"zu":61},"erste-schritte\u002Fablauf","How it works","\u002Fen\u002Fdocumentation\u002Ferste-schritte\u002Fablauf",{"titel":63,"pfad":64,"seiten":65},"Setup","wizard",[66,70],{"rel":67,"titel":68,"zu":69},"wizard\u002Fuebersicht","The setup wizard","\u002Fen\u002Fdocumentation\u002Fwizard\u002Fuebersicht",{"rel":71,"titel":72,"zu":73},"wizard\u002Fsystemanforderungen","System requirements","\u002Fen\u002Fdocumentation\u002Fwizard\u002Fsystemanforderungen",{"titel":75,"pfad":76,"seiten":77},"Setup in detail","einrichtung-detail",[78],{"rel":79,"titel":80,"zu":81},"einrichtung-detail\u002Fwindows-quelle","Import an ISO","\u002Fen\u002Fdocumentation\u002Feinrichtung-detail\u002Fwindows-quelle",{"titel":83,"pfad":84,"seiten":85},"Foundry","konfiguration",[86,90,94,98,102,106,110,114,118,122,126],{"rel":87,"titel":88,"zu":89},"konfiguration\u002Fprofile","Profiles","\u002Fen\u002Fdocumentation\u002Fkonfiguration\u002Fprofile",{"rel":91,"titel":92,"zu":93},"konfiguration\u002Fquellen","Sources","\u002Fen\u002Fdocumentation\u002Fkonfiguration\u002Fquellen",{"rel":95,"titel":96,"zu":97},"konfiguration\u002Fbenutzer","Configuring users","\u002Fen\u002Fdocumentation\u002Fkonfiguration\u002Fbenutzer",{"rel":99,"titel":100,"zu":101},"konfiguration\u002Fbilder","Background picture and logo","\u002Fen\u002Fdocumentation\u002Fkonfiguration\u002Fbilder",{"rel":103,"titel":104,"zu":105},"konfiguration\u002Fwindows-bereinigen","Cleaning up Windows","\u002Fen\u002Fdocumentation\u002Fkonfiguration\u002Fwindows-bereinigen",{"rel":107,"titel":108,"zu":109},"konfiguration\u002Fapps-entfernen","Removing apps","\u002Fen\u002Fdocumentation\u002Fkonfiguration\u002Fapps-entfernen",{"rel":111,"titel":112,"zu":113},"konfiguration\u002Fauswaehlen","Selecting applications","\u002Fen\u002Fdocumentation\u002Fkonfiguration\u002Fauswaehlen",{"rel":115,"titel":116,"zu":117},"konfiguration\u002Frichtlinien","Policies","\u002Fen\u002Fdocumentation\u002Fkonfiguration\u002Frichtlinien",{"rel":119,"titel":120,"zu":121},"konfiguration\u002Fpc-informationen","PC information","\u002Fen\u002Fdocumentation\u002Fkonfiguration\u002Fpc-informationen",{"rel":123,"titel":124,"zu":125},"konfiguration\u002Fnamensschema","Naming scheme","\u002Fen\u002Fdocumentation\u002Fkonfiguration\u002Fnamensschema",{"rel":127,"titel":128,"zu":129},"konfiguration\u002Finstall-assist-gestalten","Design the Install Assist","\u002Fen\u002Fdocumentation\u002Fkonfiguration\u002Finstall-assist-gestalten",{"titel":131,"pfad":132,"seiten":133},"Installation","installationsmedien",[134,138,142,146],{"rel":135,"titel":136,"zu":137},"installationsmedien\u002Fusb-stick","Create a USB drive","\u002Fen\u002Fdocumentation\u002Finstallationsmedien\u002Fusb-stick",{"rel":139,"titel":140,"zu":141},"installationsmedien\u002Fiso-erstellen","Creating an ISO","\u002Fen\u002Fdocumentation\u002Finstallationsmedien\u002Fiso-erstellen",{"rel":143,"titel":144,"zu":145},"installationsmedien\u002Fvhd-erstellen","Create VHD","\u002Fen\u002Fdocumentation\u002Finstallationsmedien\u002Fvhd-erstellen",{"rel":147,"titel":148,"zu":149},"installationsmedien\u002Finstall-assist","Install Assist on the target computer","\u002Fen\u002Fdocumentation\u002Finstallationsmedien\u002Finstall-assist",{"titel":151,"pfad":152,"seiten":153},"Machines","pruefmaschine",[154,158,162],{"rel":155,"titel":156,"zu":157},"pruefmaschine\u002Fhyper-v-berechtigungen","Hyper-V permissions","\u002Fen\u002Fdocumentation\u002Fpruefmaschine\u002Fhyper-v-berechtigungen",{"rel":159,"titel":160,"zu":161},"pruefmaschine\u002Fverwenden","Use the test machine","\u002Fen\u002Fdocumentation\u002Fpruefmaschine\u002Fverwenden",{"rel":163,"titel":164,"zu":165},"pruefmaschine\u002Ferstellen","Create a machine","\u002Fen\u002Fdocumentation\u002Fpruefmaschine\u002Ferstellen",{"titel":167,"pfad":168,"seiten":169},"Editions","editionen",[170,174,178],{"rel":171,"titel":172,"zu":173},"editionen\u002Fvergleich","Editions at a glance","\u002Fen\u002Fdocumentation\u002Feditionen\u002Fvergleich",{"rel":175,"titel":176,"zu":177},"editionen\u002Flizenz-aktivieren","Activate a license","\u002Fen\u002Fdocumentation\u002Feditionen\u002Flizenz-aktivieren",{"rel":179,"titel":180,"zu":181},"editionen\u002Faktivierungen-zuruecksetzen","Reset activations","\u002Fen\u002Fdocumentation\u002Feditionen\u002Faktivierungen-zuruecksetzen",{"titel":183,"pfad":184,"seiten":185},"Troubleshooting","fehler",[186,190,194,198,202],{"rel":187,"titel":188,"zu":189},"fehler\u002Fusb","USB drive problems","\u002Fen\u002Fdocumentation\u002Ffehler\u002Fusb",{"rel":191,"titel":192,"zu":193},"fehler\u002Fiso","ISO import problems","\u002Fen\u002Fdocumentation\u002Ffehler\u002Fiso",{"rel":195,"titel":196,"zu":197},"fehler\u002Fhyperv","Hyper-V problems","\u002Fen\u002Fdocumentation\u002Ffehler\u002Fhyperv",{"rel":199,"titel":200,"zu":201},"fehler\u002Finstall-assist","When Setup fails on the target computer","\u002Fen\u002Fdocumentation\u002Ffehler\u002Finstall-assist",{"rel":203,"titel":204,"zu":205},"fehler\u002Fantwortdatei","The answer file","\u002Fen\u002Fdocumentation\u002Ffehler\u002Fantwortdatei",{"titel":207,"pfad":208,"seiten":209},"Reference","referenz",[210,214,218],{"rel":211,"titel":212,"zu":213},"referenz\u002Fbekannte-probleme","Known issues","\u002Fen\u002Fdocumentation\u002Freferenz\u002Fbekannte-probleme",{"rel":215,"titel":216,"zu":217},"referenz\u002Fdiagnose-und-protokolle","Diagnostics and logs","\u002Fen\u002Fdocumentation\u002Freferenz\u002Fdiagnose-und-protokolle",{"rel":219,"titel":220,"zu":221},"referenz\u002Fglossar","Glossary","\u002Fen\u002Fdocumentation\u002Freferenz\u002Fglossar",{"titel":223,"pfad":224,"seiten":225},"Windows appendix","windows-anhang",[226,230,234],{"rel":227,"titel":228,"zu":229},"windows-anhang\u002Fdienste","Services","\u002Fen\u002Fdocumentation\u002Fwindows-anhang\u002Fdienste",{"rel":231,"titel":232,"zu":233},"windows-anhang\u002Faufgaben","Scheduled tasks","\u002Fen\u002Fdocumentation\u002Fwindows-anhang\u002Faufgaben",{"rel":235,"titel":236,"zu":237},"windows-anhang\u002Fapps","App packages","\u002Fen\u002Fdocumentation\u002Fwindows-anhang\u002Fapps",{"titel":239,"pfad":240,"seiten":241},"Policy appendix","richtlinien-anhang",[242,246,250,254,258,262,266,270,274,278,282,286,290],{"rel":243,"titel":244,"zu":245},"richtlinien-anhang\u002Frichtlinien","Policy reference","\u002Fen\u002Fdocumentation\u002Frichtlinien-anhang\u002Frichtlinien",{"rel":247,"titel":248,"zu":249},"richtlinien-anhang\u002Frichtlinien-office-haertung","Office hardening","\u002Fen\u002Fdocumentation\u002Frichtlinien-anhang\u002Frichtlinien-office-haertung",{"rel":251,"titel":252,"zu":253},"richtlinien-anhang\u002Frichtlinien-edge-internet-explorer","Edge and Internet Explorer","\u002Fen\u002Fdocumentation\u002Frichtlinien-anhang\u002Frichtlinien-edge-internet-explorer",{"rel":255,"titel":256,"zu":257},"richtlinien-anhang\u002Frichtlinien-virenschutz-angriffsflaechen","Virus protection and attack surface","\u002Fen\u002Fdocumentation\u002Frichtlinien-anhang\u002Frichtlinien-virenschutz-angriffsflaechen",{"rel":259,"titel":260,"zu":261},"richtlinien-anhang\u002Frichtlinien-netzwerk-freigaben","Network and file sharing","\u002Fen\u002Fdocumentation\u002Frichtlinien-anhang\u002Frichtlinien-netzwerk-freigaben",{"rel":263,"titel":264,"zu":265},"richtlinien-anhang\u002Frichtlinien-datenschutz-telemetrie","Privacy and telemetry","\u002Fen\u002Fdocumentation\u002Frichtlinien-anhang\u002Frichtlinien-datenschutz-telemetrie",{"rel":267,"titel":268,"zu":269},"richtlinien-anhang\u002Frichtlinien-protokollierung-ueberwachung","Logging and auditing","\u002Fen\u002Fdocumentation\u002Frichtlinien-anhang\u002Frichtlinien-protokollierung-ueberwachung",{"rel":271,"titel":272,"zu":273},"richtlinien-anhang\u002Frichtlinien-anmeldung-konten","Sign-in and accounts","\u002Fen\u002Fdocumentation\u002Frichtlinien-anhang\u002Frichtlinien-anmeldung-konten",{"rel":275,"titel":276,"zu":277},"richtlinien-anhang\u002Frichtlinien-geraete-wechselmedien","Devices and removable media","\u002Fen\u002Fdocumentation\u002Frichtlinien-anhang\u002Frichtlinien-geraete-wechselmedien",{"rel":279,"titel":280,"zu":281},"richtlinien-anhang\u002Frichtlinien-kernschutz","Kernel protection","\u002Fen\u002Fdocumentation\u002Frichtlinien-anhang\u002Frichtlinien-kernschutz",{"rel":283,"titel":284,"zu":285},"richtlinien-anhang\u002Frichtlinien-laufwerksverschluesselung","Drive encryption","\u002Fen\u002Fdocumentation\u002Frichtlinien-anhang\u002Frichtlinien-laufwerksverschluesselung",{"rel":287,"titel":288,"zu":289},"richtlinien-anhang\u002Frichtlinien-windows-update","Windows Update","\u002Fen\u002Fdocumentation\u002Frichtlinien-anhang\u002Frichtlinien-windows-update",{"rel":291,"titel":292,"zu":293},"richtlinien-anhang\u002Frichtlinien-grundeinstellungen","Defaults and privacy settings","\u002Fen\u002Fdocumentation\u002Frichtlinien-anhang\u002Frichtlinien-grundeinstellungen",null,1793199131537]