Configure extended cloud check


This feature allows Windows Defender Antivirus to block a suspicious file for up to 60 seconds, and scan it in the cloud to make sure it's safe.

The typical cloud check timeout is 10 seconds. To enable the extended cloud check feature, specify the extended time in seconds, up to an additional 50 seconds.

For example, if the desired timeout is 60 seconds, specify 50 seconds in this setting, which will enable the extended cloud check feature, and will raise the total time to 60 seconds.

Note: This feature depends on three other MAPS settings - "Configure the 'Block at First Sight' feature; "Join Microsoft MAPS"; "Send file samples when further analysis is required" all need to be enabled.


Supported on: At least Windows 10 Server, Windows 10 or Windows 10 RT
Registry HiveHKEY_LOCAL_MACHINE
Registry PathSoftware\Policies\Microsoft\Windows Defender\MpEngine
Value NameMpBafsExtendedTimeout
Value TypeREG_DWORD
Enabled Value1
Disabled Value0

Specify the extended cloud check time in seconds

Registry HiveHKEY_LOCAL_MACHINE
Registry PathSoftware\Policies\Microsoft\Windows Defender\MpEngine
Value NameMpBafsExtendedTimeout
Value TypeREG_DWORD
Default Value0
Min Value0
Max Value50

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