security.tls.hello_downgrade_check

Supported on: Firefox 72 or later, Firefox 68.4 ESR or later

Registry

HKLM Software\Policies\Mozilla\Firefox\Preferences

HKCU Software\Policies\Mozilla\Firefox\Preferences

Value name: security.tls.hello_downgrade_check

Enabled: security.tls.hello_downgrade_check = 1

Disabled: security.tls.hello_downgrade_check = 0

Description

If this policy is enabled, the preference is locked to true. If this policy is disabled, the preference is locked to false. For a description of the preference, see: https://github.com/mozilla/policy-templates/blob/master/README.md#preferences