Set Call Security options: registry value CallSecurityUserHKCU\Software\Policies\Microsoft\Conferencing

Policy ID: SetSecurityOptions
Scope: User Configuration
Supported on: at least Windows NetMeeting v3.0
Source: Administrative Templates (.admx) for Windows 11 2026 Update (26H2) (version 1.0)
Category: Windows Components › NetMeeting

Registry

CallSecurity

REG_DWORDUser

HKCU\Software\Policies\Microsoft\Conferencing Current key

Enabled value: Depends on the option value
Element: Call security

Options
Item	Stored value
Required	1
Disabled	2

Apply with .reg · CMD · PowerShell

.reg

Windows Registry Editor Version 5.00

[HKEY_CURRENT_USER\Software\Policies\Microsoft\Conferencing]

; Options (use only one)
; Required
"CallSecurity"=dword:00000001
; Disabled
"CallSecurity"=dword:00000002

CMD

:: Options (use only one)

:: Required
reg add "HKCU\Software\Policies\Microsoft\Conferencing" /v "CallSecurity" /t REG_DWORD /d 1 /f
:: Disabled
reg add "HKCU\Software\Policies\Microsoft\Conferencing" /v "CallSecurity" /t REG_DWORD /d 2 /f

PowerShell

# Common: create the key
New-Item -Path 'HKCU:\Software\Policies\Microsoft\Conferencing' -Force | Out-Null

# Options (use only one)
# Required
New-ItemProperty -Path 'HKCU:\Software\Policies\Microsoft\Conferencing' -Name 'CallSecurity' -PropertyType DWord -Value 1 -Force | Out-Null
# Disabled
New-ItemProperty -Path 'HKCU:\Software\Policies\Microsoft\Conferencing' -Name 'CallSecurity' -PropertyType DWord -Value 2 -Force | Out-Null