WPD Devices: Deny write access: registry value Deny_Write (HKLM {6AC27878-A6FA-4155-BA85-F98F491D4F33})ComputerHKLM\Software\Policies\Microsoft\Windows\RemovableStorageDevices\{6AC27878-A6FA-4155-BA85-F98F491D4F33}
- Policy ID
- WPDDevices_DenyWrite_Access_2
- Scope
- Computer Configuration
- Supported on
- At least Windows Vista
- Source
- Administrative Templates (.admx) for Windows 11 2026 Update (26H2) (version 1.0)
- Category
- System › Removable Storage Access
Registry
Deny_Write
REG_DWORDComputerHKLM\Software\Policies\Microsoft\Windows\RemovableStorageDevices\{6AC27878-A6FA-4155-BA85-F98F491D4F33} 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\RemovableStorageDevices\{6AC27878-A6FA-4155-BA85-F98F491D4F33}] ; Options (use only one) ; Enabled "Deny_Write"=dword:00000001 ; Disabled "Deny_Write"=dword:00000000
CMD
:: Options (use only one) :: Enabled reg add "HKLM\Software\Policies\Microsoft\Windows\RemovableStorageDevices\{6AC27878-A6FA-4155-BA85-F98F491D4F33}" /v "Deny_Write" /t REG_DWORD /d 1 /f :: Disabled reg add "HKLM\Software\Policies\Microsoft\Windows\RemovableStorageDevices\{6AC27878-A6FA-4155-BA85-F98F491D4F33}" /v "Deny_Write" /t REG_DWORD /d 0 /f
PowerShell
# Common: create the key New-Item -Path 'HKLM:\Software\Policies\Microsoft\Windows\RemovableStorageDevices\{6AC27878-A6FA-4155-BA85-F98F491D4F33}' -Force | Out-Null # Options (use only one) # Enabled New-ItemProperty -Path 'HKLM:\Software\Policies\Microsoft\Windows\RemovableStorageDevices\{6AC27878-A6FA-4155-BA85-F98F491D4F33}' -Name 'Deny_Write' -PropertyType DWord -Value 1 -Force | Out-Null # Disabled New-ItemProperty -Path 'HKLM:\Software\Policies\Microsoft\Windows\RemovableStorageDevices\{6AC27878-A6FA-4155-BA85-F98F491D4F33}' -Name 'Deny_Write' -PropertyType DWord -Value 0 -Force | Out-Null
Deny_Write
REG_DWORDComputerHKLM\Software\Policies\Microsoft\Windows\RemovableStorageDevices\{F33FDC04-D1AC-4E8E-9A30-19BBD4B108AE}
- 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\RemovableStorageDevices\{F33FDC04-D1AC-4E8E-9A30-19BBD4B108AE}] ; Options (use only one) ; Enabled "Deny_Write"=dword:00000001 ; Disabled "Deny_Write"=dword:00000000
CMD
:: Options (use only one) :: Enabled reg add "HKLM\Software\Policies\Microsoft\Windows\RemovableStorageDevices\{F33FDC04-D1AC-4E8E-9A30-19BBD4B108AE}" /v "Deny_Write" /t REG_DWORD /d 1 /f :: Disabled reg add "HKLM\Software\Policies\Microsoft\Windows\RemovableStorageDevices\{F33FDC04-D1AC-4E8E-9A30-19BBD4B108AE}" /v "Deny_Write" /t REG_DWORD /d 0 /f
PowerShell
# Common: create the key New-Item -Path 'HKLM:\Software\Policies\Microsoft\Windows\RemovableStorageDevices\{F33FDC04-D1AC-4E8E-9A30-19BBD4B108AE}' -Force | Out-Null # Options (use only one) # Enabled New-ItemProperty -Path 'HKLM:\Software\Policies\Microsoft\Windows\RemovableStorageDevices\{F33FDC04-D1AC-4E8E-9A30-19BBD4B108AE}' -Name 'Deny_Write' -PropertyType DWord -Value 1 -Force | Out-Null # Disabled New-ItemProperty -Path 'HKLM:\Software\Policies\Microsoft\Windows\RemovableStorageDevices\{F33FDC04-D1AC-4E8E-9A30-19BBD4B108AE}' -Name 'Deny_Write' -PropertyType DWord -Value 0 -Force | Out-Null