TLS_CHACHA20_POLY1305_SHA256: registry value TLS_CHACHA20_POLY1305_SHA256ComputerHKLM\Software\Policies\Mozilla\Firefox\DisabledCiphers

Policy ID: DisabledCiphers_TLS_CHACHA20_POLY1305_SHA256
Scope: Computer Configuration, User Configuration
Supported on: Firefox 138 or later
Source: Mozilla Firefox Policy Templates (version 8.3)
Category: Mozilla › Firefox › Disabled Ciphers

Registry

TLS_CHACHA20_POLY1305_SHA256

REG_DWORDComputerUser

…\Software\Policies\Mozilla\Firefox\DisabledCiphersHKLM\Software\Policies\Mozilla\Firefox\DisabledCiphers Current key
HKCU\Software\Policies\Mozilla\Firefox\DisabledCiphers

Enabled value: 1
Disabled value: 0

Apply with .reg · CMD · PowerShell

ComputerMachine-wide setting

.reg

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\Software\Policies\Mozilla\Firefox\DisabledCiphers]

; Options (use only one)
; Enabled
"TLS_CHACHA20_POLY1305_SHA256"=dword:00000001
; Disabled
"TLS_CHACHA20_POLY1305_SHA256"=dword:00000000

CMD

:: Options (use only one)

:: Enabled
reg add "HKLM\Software\Policies\Mozilla\Firefox\DisabledCiphers" /v "TLS_CHACHA20_POLY1305_SHA256" /t REG_DWORD /d 1 /f
:: Disabled
reg add "HKLM\Software\Policies\Mozilla\Firefox\DisabledCiphers" /v "TLS_CHACHA20_POLY1305_SHA256" /t REG_DWORD /d 0 /f

PowerShell

# Common: create the key
New-Item -Path 'HKLM:\Software\Policies\Mozilla\Firefox\DisabledCiphers' -Force | Out-Null

# Options (use only one)
# Enabled
New-ItemProperty -Path 'HKLM:\Software\Policies\Mozilla\Firefox\DisabledCiphers' -Name 'TLS_CHACHA20_POLY1305_SHA256' -PropertyType DWord -Value 1 -Force | Out-Null
# Disabled
New-ItemProperty -Path 'HKLM:\Software\Policies\Mozilla\Firefox\DisabledCiphers' -Name 'TLS_CHACHA20_POLY1305_SHA256' -PropertyType DWord -Value 0 -Force | Out-Null

UserPer-account setting

.reg

Windows Registry Editor Version 5.00

[HKEY_CURRENT_USER\Software\Policies\Mozilla\Firefox\DisabledCiphers]

; Options (use only one)
; Enabled
"TLS_CHACHA20_POLY1305_SHA256"=dword:00000001
; Disabled
"TLS_CHACHA20_POLY1305_SHA256"=dword:00000000

CMD

:: Options (use only one)

:: Enabled
reg add "HKCU\Software\Policies\Mozilla\Firefox\DisabledCiphers" /v "TLS_CHACHA20_POLY1305_SHA256" /t REG_DWORD /d 1 /f
:: Disabled
reg add "HKCU\Software\Policies\Mozilla\Firefox\DisabledCiphers" /v "TLS_CHACHA20_POLY1305_SHA256" /t REG_DWORD /d 0 /f

PowerShell

# Common: create the key
New-Item -Path 'HKCU:\Software\Policies\Mozilla\Firefox\DisabledCiphers' -Force | Out-Null

# Options (use only one)
# Enabled
New-ItemProperty -Path 'HKCU:\Software\Policies\Mozilla\Firefox\DisabledCiphers' -Name 'TLS_CHACHA20_POLY1305_SHA256' -PropertyType DWord -Value 1 -Force | Out-Null
# Disabled
New-ItemProperty -Path 'HKCU:\Software\Policies\Mozilla\Firefox\DisabledCiphers' -Name 'TLS_CHACHA20_POLY1305_SHA256' -PropertyType DWord -Value 0 -Force | Out-Null