[Monthly security update releases](/windows/deployment/update/release-cycle#monthly-security-update-release), also known as Windows quality updates, are installed during a Windows Autopilot device preparation deployment as part of the Windows out-of-box experience (OOBE). The monthly security update releases are installed after the device preparation page completes. These updates can't be disabled for Windows Autopilot device preparation deployments. Installation of monthly security update releases during OOBE normally adds 20-40 minutes to the provisioning process. Installation of monthly security update releases also might require restarts.
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