Use HTTP proxy for HTTPS

Supported on: Firefox 60 or later, Firefox 60 ESR or later

Registry

HKLM Software\Policies\Mozilla\Firefox\Proxy

HKCU Software\Policies\Mozilla\Firefox\Proxy

Value name: UseHTTPProxyForAllProtocols

Enabled: UseHTTPProxyForAllProtocols = 1

Disabled: UseHTTPProxyForAllProtocols = 0

Description

If this policy is enabled, the HTTP Proxy is used for HTTPS when manual proxy configuration is specified. If this policy is disabled or not configured, Firefox does not use an HTTPS Proxy unless specified.