Enable dev drive: registry value FsEnableDevDrive and 1 moreComputerHKLM\System\CurrentControlSet\Policies

Policy ID: EnableDevDrive
Scope: Computer Configuration
Supported on: At least Windows 11 Version 22H2
Source: Administrative Templates (.admx) for Windows 11 2026 Update (26H2) (version 1.0)
Category: System › Filesystem

Registry

FsEnableDevDrive

REG_DWORDComputer

HKLM\System\CurrentControlSet\Policies Current key

Enabled value: 1
Disabled value: 0

Apply with .reg · CMD · PowerShell

.reg

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\System\CurrentControlSet\Policies]

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

CMD

:: Options (use only one)

:: Enabled
reg add "HKLM\System\CurrentControlSet\Policies" /v "FsEnableDevDrive" /t REG_DWORD /d 1 /f
:: Disabled
reg add "HKLM\System\CurrentControlSet\Policies" /v "FsEnableDevDrive" /t REG_DWORD /d 0 /f

PowerShell

# Common: create the key
New-Item -Path 'HKLM:\System\CurrentControlSet\Policies' -Force | Out-Null

# Options (use only one)
# Enabled
New-ItemProperty -Path 'HKLM:\System\CurrentControlSet\Policies' -Name 'FsEnableDevDrive' -PropertyType DWord -Value 1 -Force | Out-Null
# Disabled
New-ItemProperty -Path 'HKLM:\System\CurrentControlSet\Policies' -Name 'FsEnableDevDrive' -PropertyType DWord -Value 0 -Force | Out-Null

FltmgrDevDriveAllowAntivirusFilter

REG_DWORDComputer

HKLM\System\CurrentControlSet\Policies Current key

Checked: 1
Unchecked: 0
Element: Let antivirus filter protect dev drives
Value type: REG_DWORD

Apply with .reg · CMD · PowerShell

.reg

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\System\CurrentControlSet\Policies]

; Options (use only one)
; Checked
"FltmgrDevDriveAllowAntivirusFilter"=dword:00000001
; Unchecked
"FltmgrDevDriveAllowAntivirusFilter"=dword:00000000

CMD

:: Options (use only one)

:: Checked
reg add "HKLM\System\CurrentControlSet\Policies" /v "FltmgrDevDriveAllowAntivirusFilter" /t REG_DWORD /d 1 /f
:: Unchecked
reg add "HKLM\System\CurrentControlSet\Policies" /v "FltmgrDevDriveAllowAntivirusFilter" /t REG_DWORD /d 0 /f

PowerShell

# Common: create the key
New-Item -Path 'HKLM:\System\CurrentControlSet\Policies' -Force | Out-Null

# Options (use only one)
# Checked
New-ItemProperty -Path 'HKLM:\System\CurrentControlSet\Policies' -Name 'FltmgrDevDriveAllowAntivirusFilter' -PropertyType DWord -Value 1 -Force | Out-Null
# Unchecked
New-ItemProperty -Path 'HKLM:\System\CurrentControlSet\Policies' -Name 'FltmgrDevDriveAllowAntivirusFilter' -PropertyType DWord -Value 0 -Force | Out-Null