Set client connection encryption level: registry value MinEncryptionLevelComputerHKLM\SOFTWARE\Policies\Microsoft\Windows NT\Terminal Services

Policy ID: TS_ENCRYPTION_POLICY
Scope: Computer Configuration
Supported on: At least Windows Server 2003 operating systems or Windows XP Professional
Source: Administrative Templates (.admx) for Windows 11 2026 Update (26H2) (version 1.0)
Category: Windows Components › Remote Desktop Services › Remote Desktop Session Host › Security

Registry

MinEncryptionLevel

REG_DWORDComputer

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

Enabled value: Depends on the option value
Element: Encryption Level

Options
Item	Stored value
Low Level	1
Client Compatible	2
High Level	3

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)
; Low Level
"MinEncryptionLevel"=dword:00000001
; Client Compatible
"MinEncryptionLevel"=dword:00000002
; High Level
"MinEncryptionLevel"=dword:00000003

CMD

:: Options (use only one)

:: Low Level
reg add "HKLM\SOFTWARE\Policies\Microsoft\Windows NT\Terminal Services" /v "MinEncryptionLevel" /t REG_DWORD /d 1 /f
:: Client Compatible
reg add "HKLM\SOFTWARE\Policies\Microsoft\Windows NT\Terminal Services" /v "MinEncryptionLevel" /t REG_DWORD /d 2 /f
:: High Level
reg add "HKLM\SOFTWARE\Policies\Microsoft\Windows NT\Terminal Services" /v "MinEncryptionLevel" /t REG_DWORD /d 3 /f

PowerShell

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

# Options (use only one)
# Low Level
New-ItemProperty -Path 'HKLM:\SOFTWARE\Policies\Microsoft\Windows NT\Terminal Services' -Name 'MinEncryptionLevel' -PropertyType DWord -Value 1 -Force | Out-Null
# Client Compatible
New-ItemProperty -Path 'HKLM:\SOFTWARE\Policies\Microsoft\Windows NT\Terminal Services' -Name 'MinEncryptionLevel' -PropertyType DWord -Value 2 -Force | Out-Null
# High Level
New-ItemProperty -Path 'HKLM:\SOFTWARE\Policies\Microsoft\Windows NT\Terminal Services' -Name 'MinEncryptionLevel' -PropertyType DWord -Value 3 -Force | Out-Null