Policy
Start the scheduled scan only when computer is on but not in use
This policy setting allows you to configure scheduled scans to start only when your computer is on but not in use. If you enable or do not configure this setting, scheduled scans will only run when the computer is on but not in use. If you disable this setting, scheduled scans will run at the scheduled time.
PackMicrosoft Windows
CategoryWindows Components / Microsoft Defender Antivirus / Scan
Policy ID
81ca3e692c91Internal name
Scan_ScanOnlyIfIdleRegistry
Copy registry mappings
HKLM\Software\Policies\Microsoft\Windows Defender\Scan\ScanOnlyIfIdle (enabled) = 1
HKLM\Software\Policies\Microsoft\Windows Defender\Scan\ScanOnlyIfIdle (disabled) = 0Policy notes
This policy setting allows you to configure scheduled scans to start only when your computer is on but not in use. If you enable or do not configure this setting, scheduled scans will only run when the computer is on but not in use. If you disable this setting, scheduled scans will run at the scheduled time.
Related policies
Allow users to pause scanCheck for the latest virus and spyware security intelligence before running a scheduled scanConfigure local setting override for maximum percentage of CPU utilizationConfigure local setting override for schedule scan dayConfigure local setting override for scheduled quick scan timeConfigure local setting override for scheduled scan timeConfigure local setting override for the scan type to use for a scheduled scanConfigure low CPU priority for scheduled scansConfigure scanning of network filesCPU throttling typeCreate a system restore pointDefine the number of days after which a catch-up scan is forcedRun full scan on mapped network drivesScan archive filesScan excluded files and directories during quick scansScan packed executablesScan removable drivesSpecify the day of the week to run a scheduled scanSpecify the interval to run quick scans per daySpecify the maximum depth to scan archive files