Disabled SMB over QUIC Server Exception List: registry value DisabledSMBQUICServerExceptionListComputerHKLM\Software\Policies\Microsoft\Windows\LanmanWorkstation

Policy ID: Pol_DisabledSMBQUICServerExceptionList
Scope: Computer Configuration
Supported on: At least Windows Server 2025, Windows 11
Source: Administrative Templates (.admx) for Windows 11 2026 Update (26H2) (version 1.0)
Category: Network › Lanman Workstation

Registry

DisabledSMBQUICServerExceptionList

REG_MULTI_SZComputer

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

Enabled value: Depends on the option value
Element: -
Value type: REG_MULTI_SZ

Apply with .reg · CMD · PowerShell

.reg

Windows Registry Editor Version 5.00

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

; Value names and types follow the ADMX. Replace <enter value> below with your own data
; hex(2) and hex(7) data must be written as hexadecimal (UTF-16LE)
"DisabledSMBQUICServerExceptionList"=hex(7):<enter value>

CMD

:: Value names and types follow the ADMX. Replace <enter value> below with your own data

reg add "HKLM\Software\Policies\Microsoft\Windows\LanmanWorkstation" /v "DisabledSMBQUICServerExceptionList" /t REG_MULTI_SZ /d "<enter value>" /f

PowerShell

# Value names and types follow the ADMX. Replace <enter value> below with your own data

New-Item -Path 'HKLM:\Software\Policies\Microsoft\Windows\LanmanWorkstation' -Force | Out-Null
New-ItemProperty -Path 'HKLM:\Software\Policies\Microsoft\Windows\LanmanWorkstation' -Name 'DisabledSMBQUICServerExceptionList' -PropertyType MultiString -Value '<enter value>' -Force | Out-Null