Prohibit removal of updates: registry value DisablePatchUninstallComputerHKLM\Software\Policies\Microsoft\Windows\Installer

Policy ID: MSI_DisablePatchUninstall
Scope: Computer Configuration
Supported on: Windows Installer v3.0
Source: Administrative Templates (.admx) for Windows 11 2026 Update (26H2) (version 1.0)
Category: Windows Components › Windows Installer

Registry

DisablePatchUninstall

REG_DWORDComputer

HKLM\Software\Policies\Microsoft\Windows\Installer 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\Installer]

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

CMD

:: Options (use only one)

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

PowerShell

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

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