Set the time Quiet Hours ends each day: registry value ExitTimeUserHKCU\SOFTWARE\Policies\Microsoft\Windows\CurrentVersion\QuietHours

Policy ID: QuietHoursDailyEndMinute
Scope: User Configuration
Supported on: Windows Server 2012 R2, Windows 8.1 or Windows RT 8.1 only
Source: Administrative Templates (.admx) for Windows 11 2026 Update (26H2) (version 1.0)
Category: Start Menu and Taskbar › Notifications

Registry

ExitTime

REG_DWORDUser

HKCU\SOFTWARE\Policies\Microsoft\Windows\CurrentVersion\QuietHours Current key

Enabled value: Depends on the option value
Element: Minutes after midnight:
Value type: REG_DWORD
Minimum value: 0
Maximum value: 1439

Apply with .reg · CMD · PowerShell

.reg

Windows Registry Editor Version 5.00

[HKEY_CURRENT_USER\SOFTWARE\Policies\Microsoft\Windows\CurrentVersion\QuietHours]

; Value names and types follow the ADMX. Replace <enter value> below with your own data
"ExitTime"=dword:<enter value>

CMD

:: Value names and types follow the ADMX. Replace <enter value> below with your own data

reg add "HKCU\SOFTWARE\Policies\Microsoft\Windows\CurrentVersion\QuietHours" /v "ExitTime" /t REG_DWORD /d "<enter value>" /f

PowerShell

# Value names and types follow the ADMX. Replace <enter value> below with your own data

New-Item -Path 'HKCU:\SOFTWARE\Policies\Microsoft\Windows\CurrentVersion\QuietHours' -Force | Out-Null
New-ItemProperty -Path 'HKCU:\SOFTWARE\Policies\Microsoft\Windows\CurrentVersion\QuietHours' -Name 'ExitTime' -PropertyType DWord -Value '<enter value>' -Force | Out-Null