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Merge pull request #3942 from andrewjohnporter/patch-3
Update Set-MpPreference.md
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docset/winserver2025-ps/defender/Set-MpPreference.md

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description: The Set-MpPreference cmdlet configures preferences for Windows Defender scans and updates.
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external help file: MSFT_MpPreference.cdxml-help.xml
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Module Name: Defender
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ms.date: 03/22/2023
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ms.date: 04/14/2025
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online version: https://learn.microsoft.com/powershell/module/defender/set-mppreference?view=windowsserver2025-ps&wt.mc_id=ps-gethelp
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schema: 2.0.0
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title: Set-MpPreference
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If you randomize the start times, it can distribute the impact of scanning.
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For example, if several virtual machines share the same host, randomized start times prevents all the hosts from starting the scheduled tasks at the same time.
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If this setting and the SchedulerRandomizationTime setting are both set to Not Configured then the system will use the default behavior of RandomizeScheduleTaskTimes, which is a 30-minute window.
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```yaml
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Type: Boolean
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Parameter Sets: (All)
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### -SchedulerRandomizationTime
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Specifies the randomization time for the scheduler.
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If you disable or do not configure this setting, scheduled tasks will begin at a random time within an interval of 4 hours after the specified start time.
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If you enable this setting, you must pick a randomization window in hours. The possible randomization window interval is between 1 and 23 hours.
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If this setting and the RandomizeScheduleTaskTimes setting are both set to Not Configured then the system will use the default behavior of RandomizeScheduleTaskTimes, which is a 30-minute window.
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```yaml
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Type: UInt32
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Parameter Sets: (All)

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