Select cloud protection level
Supported on: At least Windows Server 2016, Windows 10
Registry
Software\Policies\Microsoft\Windows Defender\MpEngine Value name: MpCloudBlockLevel
Options
MpCloudBlockLevel enum - Default blocking level
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0 - Moderate blocking level
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1 - High blocking level
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2 - High+ blocking level
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4 - Zero tolerance blocking level
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6
Description
This policy setting determines how aggressive Microsoft Defender Antivirus will be in blocking and scanning suspicious files. If this setting is on, Microsoft Defender Antivirus will be more aggressive when identifying suspicious files to block and scan; otherwise, it will be less aggressive and therefore block and scan with less frequency. For more information about specific values that are supported, see the Microsoft Defender Antivirus documentation site. Note: This feature requires the "Join Microsoft MAPS" setting enabled in order to function. Possible options are: (0x0) Default Microsoft Defender Antivirus blocking level (0x1) Moderate Microsoft Defender Antivirus blocking level, delivers verdict only for high confidence detections (0x2) High blocking level - aggressively block unknowns while optimizing client performance (greater chance of false positives) (0x4) High+ blocking level – aggressively block unknowns and apply additional protection measures (may impact client performance) (0x6) Zero tolerance blocking level – block all unknown executables