查看后台是否有这个在运行注册表路径 计算机\HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender新建 DWORD(32位)健值主项DisableAntiSpywareDisableRealtimeMonitoringDisableAntiVirusDisableSpecialRunningModesDisableRoutinelyTakingActionServiceKeepAlive项Real-Time ProtectionDisableBehaviorMonitoringDisableOnAccessProtectionDisableRealtimeMonitoringDisableScanOnRealtimeEnable项Signature UpdatesForceUpdateFromMU项SpynetDisableBlockAtFirstSeen新建项Real-Time ProtectionSignature UpdatesSpynet都设置为1然后重启电脑