`BehaviorPrivateBrowsing` sets the default behavior for cookies in private browsing based on the values below.
| Value | Description
-| --- | ---
+| --- | --- |
| accept | Accept all cookies
| reject-foreign | Reject third party cookies
| reject | Reject all cookies
as well as the following security preferences:
| Preference | Type | Default
-| --- | --- | ---
+| --- | --- | --- |
| security.default_personal_cert | string | Ask Every Time
| If set to Select Automatically, Firefox automatically chooses the default personal certificate.
| security.insecure_connection_text.enabled | bool | false
**Preferences Affected:** See below
| Preference | Type | Compatibility | Default
-| --- | --- | --- | ---
+| --- | --- | --- | --- |
| accessibility.force_disabled | integer | Firefox 70, Firefox ESR 68.2 | 0
| If set to 1, platform accessibility is disabled.
| app.update.auto (Deprecated - Switch to AppAutoUpdate policy) | boolean | Firefox 68, Firefox ESR 68 | true
| If false, the Alt key doesn't show the menubar on Windows.
| widget.content.gtk-theme-override | string | Firefox 72, Firefox ESR 68.4 (Linux only) | N/A
| If set, overrides the GTK theme for widgets.
+
#### Windows (GPO)
```
Software\Policies\Mozilla\Firefox\Preferences\boolean_preference_name = 0x1 | 0x0