Prohibit User Installs: registry value DisableUserInstallsComputerHKLM\Software\Policies\Microsoft\Windows\Installer

Policy ID: MSI_DisableUserInstalls
Scope: Computer Configuration
Supported on: Microsoft Windows XP or Windows 2000 with Windows Installer v2.0
Source: Administrative Templates (.admx) for Windows 11 2026 Update (26H2) (version 1.0)
Category: Windows Components › Windows Installer

Registry

DisableUserInstalls

REG_DWORDComputer

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

Enabled value: Depends on the option value
Element: User Install Behavior:

Options
Item	Stored value
Allow User Installs	0
Hide User Installs	1

Apply with .reg · CMD · PowerShell

.reg

Windows Registry Editor Version 5.00

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

; Options (use only one)
; Allow User Installs
"DisableUserInstalls"=dword:00000000
; Hide User Installs
"DisableUserInstalls"=dword:00000001

CMD

:: Options (use only one)

:: Allow User Installs
reg add "HKLM\Software\Policies\Microsoft\Windows\Installer" /v "DisableUserInstalls" /t REG_DWORD /d 0 /f
:: Hide User Installs
reg add "HKLM\Software\Policies\Microsoft\Windows\Installer" /v "DisableUserInstalls" /t REG_DWORD /d 1 /f

PowerShell

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

# Options (use only one)
# Allow User Installs
New-ItemProperty -Path 'HKLM:\Software\Policies\Microsoft\Windows\Installer' -Name 'DisableUserInstalls' -PropertyType DWord -Value 0 -Force | Out-Null
# Hide User Installs
New-ItemProperty -Path 'HKLM:\Software\Policies\Microsoft\Windows\Installer' -Name 'DisableUserInstalls' -PropertyType DWord -Value 1 -Force | Out-Null