Select RDP transport protocols: registry value SelectTransportComputerHKLM\SOFTWARE\Policies\Microsoft\Windows NT\Terminal Services

Policy ID: TS_SELECT_TRANSPORT
Scope: Computer Configuration
Supported on: At least Windows Server 2012, Windows 8 or Windows RT
Source: Administrative Templates (.admx) for Windows 11 2026 Update (26H2) (version 1.0)
Category: Windows Components › Remote Desktop Services › Remote Desktop Session Host › Connections

Registry

SelectTransport

REG_DWORDComputer

HKLM\SOFTWARE\Policies\Microsoft\Windows NT\Terminal Services Current key

Enabled value: Depends on the option value
Element: Select Transport Type

Options
Item	Stored value
Use either UDP or TCP	2
Use only TCP	1

Apply with .reg · CMD · PowerShell

.reg

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows NT\Terminal Services]

; Options (use only one)
; Use either UDP or TCP
"SelectTransport"=dword:00000002
; Use only TCP
"SelectTransport"=dword:00000001

CMD

:: Options (use only one)

:: Use either UDP or TCP
reg add "HKLM\SOFTWARE\Policies\Microsoft\Windows NT\Terminal Services" /v "SelectTransport" /t REG_DWORD /d 2 /f
:: Use only TCP
reg add "HKLM\SOFTWARE\Policies\Microsoft\Windows NT\Terminal Services" /v "SelectTransport" /t REG_DWORD /d 1 /f

PowerShell

# Common: create the key
New-Item -Path 'HKLM:\SOFTWARE\Policies\Microsoft\Windows NT\Terminal Services' -Force | Out-Null

# Options (use only one)
# Use either UDP or TCP
New-ItemProperty -Path 'HKLM:\SOFTWARE\Policies\Microsoft\Windows NT\Terminal Services' -Name 'SelectTransport' -PropertyType DWord -Value 2 -Force | Out-Null
# Use only TCP
New-ItemProperty -Path 'HKLM:\SOFTWARE\Policies\Microsoft\Windows NT\Terminal Services' -Name 'SelectTransport' -PropertyType DWord -Value 1 -Force | Out-Null