Disk Management Extension: registry value Restrict_RunUserHKCU\Software\Policies\Microsoft\MMC\{dbfca500-8c31-11d0-aa2c-00a0c92749a3}

Policy ID: MMC_DiskManagementSnapInExtension
Scope: User Configuration
Supported on: At least Windows 2000
Source: Administrative Templates (.admx) for Windows 11 2026 Update (26H2) (version 1.0)
Category: Windows Components › Microsoft Management Console › Restricted/Permitted snap-ins › Extension snap-ins

Registry

Restrict_Run

REG_DWORDUser

HKCU\Software\Policies\Microsoft\MMC\{dbfca500-8c31-11d0-aa2c-00a0c92749a3} Current key

Enabled value: 0
Disabled value: 1

Apply with .reg · CMD · PowerShell

.reg

Windows Registry Editor Version 5.00

[HKEY_CURRENT_USER\Software\Policies\Microsoft\MMC\{dbfca500-8c31-11d0-aa2c-00a0c92749a3}]

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

CMD

:: Options (use only one)

:: Enabled
reg add "HKCU\Software\Policies\Microsoft\MMC\{dbfca500-8c31-11d0-aa2c-00a0c92749a3}" /v "Restrict_Run" /t REG_DWORD /d 0 /f
:: Disabled
reg add "HKCU\Software\Policies\Microsoft\MMC\{dbfca500-8c31-11d0-aa2c-00a0c92749a3}" /v "Restrict_Run" /t REG_DWORD /d 1 /f

PowerShell

# Common: create the key
New-Item -Path 'HKCU:\Software\Policies\Microsoft\MMC\{dbfca500-8c31-11d0-aa2c-00a0c92749a3}' -Force | Out-Null

# Options (use only one)
# Enabled
New-ItemProperty -Path 'HKCU:\Software\Policies\Microsoft\MMC\{dbfca500-8c31-11d0-aa2c-00a0c92749a3}' -Name 'Restrict_Run' -PropertyType DWord -Value 0 -Force | Out-Null
# Disabled
New-ItemProperty -Path 'HKCU:\Software\Policies\Microsoft\MMC\{dbfca500-8c31-11d0-aa2c-00a0c92749a3}' -Name 'Restrict_Run' -PropertyType DWord -Value 1 -Force | Out-Null