Configure auto-restart warning notifications schedule for updates: registry value SetRestartWarningSchd and 2 moreComputerHKLM\Software\Policies\Microsoft\Windows\WindowsUpdate

Policy ID: RestartWarnRemind
Scope: Computer Configuration
Supported on: Windows Server 2016 through Windows Server 2022, or Windows 10
Source: Administrative Templates (.admx) for Windows 11 2026 Update (26H2) (version 1.0)
Category: Windows Components › Windows Update › Legacy Policies

Registry

SetRestartWarningSchd

REG_DWORDComputer

HKLM\Software\Policies\Microsoft\Windows\WindowsUpdate Current key

Enabled value: 1
Disabled value: 0

Apply with .reg · CMD · PowerShell

.reg

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\WindowsUpdate]

; Options (use only one)
; Enabled
"SetRestartWarningSchd"=dword:00000001
; Disabled
"SetRestartWarningSchd"=dword:00000000

CMD

:: Options (use only one)

:: Enabled
reg add "HKLM\Software\Policies\Microsoft\Windows\WindowsUpdate" /v "SetRestartWarningSchd" /t REG_DWORD /d 1 /f
:: Disabled
reg add "HKLM\Software\Policies\Microsoft\Windows\WindowsUpdate" /v "SetRestartWarningSchd" /t REG_DWORD /d 0 /f

PowerShell

# Common: create the key
New-Item -Path 'HKLM:\Software\Policies\Microsoft\Windows\WindowsUpdate' -Force | Out-Null

# Options (use only one)
# Enabled
New-ItemProperty -Path 'HKLM:\Software\Policies\Microsoft\Windows\WindowsUpdate' -Name 'SetRestartWarningSchd' -PropertyType DWord -Value 1 -Force | Out-Null
# Disabled
New-ItemProperty -Path 'HKLM:\Software\Policies\Microsoft\Windows\WindowsUpdate' -Name 'SetRestartWarningSchd' -PropertyType DWord -Value 0 -Force | Out-Null

ScheduleRestartWarning

REG_DWORDComputer

HKLM\Software\Policies\Microsoft\Windows\WindowsUpdate Current key

Enabled value: Depends on the option value
Element: Reminder (hours):

Options
Item	Stored value
2	2
4	4
8	8
12	12
24	24

Apply with .reg · CMD · PowerShell

.reg

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\WindowsUpdate]

; Options (use only one)
; 2
"ScheduleRestartWarning"=dword:00000002
; 4
"ScheduleRestartWarning"=dword:00000004
; 8
"ScheduleRestartWarning"=dword:00000008
; 12
"ScheduleRestartWarning"=dword:0000000c
; 24
"ScheduleRestartWarning"=dword:00000018

CMD

:: Options (use only one)

:: 2
reg add "HKLM\Software\Policies\Microsoft\Windows\WindowsUpdate" /v "ScheduleRestartWarning" /t REG_DWORD /d 2 /f
:: 4
reg add "HKLM\Software\Policies\Microsoft\Windows\WindowsUpdate" /v "ScheduleRestartWarning" /t REG_DWORD /d 4 /f
:: 8
reg add "HKLM\Software\Policies\Microsoft\Windows\WindowsUpdate" /v "ScheduleRestartWarning" /t REG_DWORD /d 8 /f
:: 12
reg add "HKLM\Software\Policies\Microsoft\Windows\WindowsUpdate" /v "ScheduleRestartWarning" /t REG_DWORD /d 12 /f
:: 24
reg add "HKLM\Software\Policies\Microsoft\Windows\WindowsUpdate" /v "ScheduleRestartWarning" /t REG_DWORD /d 24 /f

PowerShell

# Common: create the key
New-Item -Path 'HKLM:\Software\Policies\Microsoft\Windows\WindowsUpdate' -Force | Out-Null

# Options (use only one)
# 2
New-ItemProperty -Path 'HKLM:\Software\Policies\Microsoft\Windows\WindowsUpdate' -Name 'ScheduleRestartWarning' -PropertyType DWord -Value 2 -Force | Out-Null
# 4
New-ItemProperty -Path 'HKLM:\Software\Policies\Microsoft\Windows\WindowsUpdate' -Name 'ScheduleRestartWarning' -PropertyType DWord -Value 4 -Force | Out-Null
# 8
New-ItemProperty -Path 'HKLM:\Software\Policies\Microsoft\Windows\WindowsUpdate' -Name 'ScheduleRestartWarning' -PropertyType DWord -Value 8 -Force | Out-Null
# 12
New-ItemProperty -Path 'HKLM:\Software\Policies\Microsoft\Windows\WindowsUpdate' -Name 'ScheduleRestartWarning' -PropertyType DWord -Value 12 -Force | Out-Null
# 24
New-ItemProperty -Path 'HKLM:\Software\Policies\Microsoft\Windows\WindowsUpdate' -Name 'ScheduleRestartWarning' -PropertyType DWord -Value 24 -Force | Out-Null

ScheduleImminentRestartWarning

REG_DWORDComputer

HKLM\Software\Policies\Microsoft\Windows\WindowsUpdate Current key

Enabled value: Depends on the option value
Element: Warning (mins):

Options
Item	Stored value
15	15
30	30
60	60

Apply with .reg · CMD · PowerShell

.reg

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\WindowsUpdate]

; Options (use only one)
; 15
"ScheduleImminentRestartWarning"=dword:0000000f
; 30
"ScheduleImminentRestartWarning"=dword:0000001e
; 60
"ScheduleImminentRestartWarning"=dword:0000003c

CMD

:: Options (use only one)

:: 15
reg add "HKLM\Software\Policies\Microsoft\Windows\WindowsUpdate" /v "ScheduleImminentRestartWarning" /t REG_DWORD /d 15 /f
:: 30
reg add "HKLM\Software\Policies\Microsoft\Windows\WindowsUpdate" /v "ScheduleImminentRestartWarning" /t REG_DWORD /d 30 /f
:: 60
reg add "HKLM\Software\Policies\Microsoft\Windows\WindowsUpdate" /v "ScheduleImminentRestartWarning" /t REG_DWORD /d 60 /f

PowerShell

# Common: create the key
New-Item -Path 'HKLM:\Software\Policies\Microsoft\Windows\WindowsUpdate' -Force | Out-Null

# Options (use only one)
# 15
New-ItemProperty -Path 'HKLM:\Software\Policies\Microsoft\Windows\WindowsUpdate' -Name 'ScheduleImminentRestartWarning' -PropertyType DWord -Value 15 -Force | Out-Null
# 30
New-ItemProperty -Path 'HKLM:\Software\Policies\Microsoft\Windows\WindowsUpdate' -Name 'ScheduleImminentRestartWarning' -PropertyType DWord -Value 30 -Force | Out-Null
# 60
New-ItemProperty -Path 'HKLM:\Software\Policies\Microsoft\Windows\WindowsUpdate' -Name 'ScheduleImminentRestartWarning' -PropertyType DWord -Value 60 -Force | Out-Null