Added note in Preferences section

Added note in Preferences section, to remove settings in the old Preferences section otherwise it will not work

diff --git a/README.md b/README.md
index dfa49c9c46a3efc19531e67476af97dd58ed84f2..68b003071be5a2fb9c1b096c623d86c2a9755b9a 100644 (file)
--- a/README.md
+++ b/README.md
@@ -75,7 +75,7 @@ Policies can be specified using the [Group Policy templates on Windows](https://
 | **[`Permissions`](#permissions)** | Set permissions associated with camera, microphone, location, and notifications.
 | **[`PictureInPicture`](#pictureinpicture)** | Enable or disable Picture-in-Picture.
 | **[`PopupBlocking`](#popupblocking)** | Configure the default pop-up window policy as well as origins for which pop-up windows are allowed.
-| **[`Preferences`](#preferences)** | Set and lock preferences.
+| **[`Preferences`](#preferences)** | Set and lock preferences. (NOTE: in order to use this, settings in the **[`Preferences (Deprecated)`](#preferences-deprecated)** section must be cleared.
 | **[`Preferences (Deprecated)`](#preferences-deprecated)** | Set and lock some preferences.
 | **[`PromptForDownloadLocation`](#promptfordownloadlocation)** | Ask where to save each file before downloading.
 | **[`Proxy`](#proxy)** | Configure proxy settings.
@@ -3752,6 +3752,8 @@ Value (string):
 ### Preferences
 Set and lock preferences.
 
+**NOTE** In order to use this policy, you must clear all settings in the old **Preferences (Deprecated)** section.
+
 Previously you could only set and lock a subset of preferences. Starting with Firefox 81 and Firefox ESR 78.3 you can set many more preferences. You can also set default preferences, user preferences and you can clear preferences.
 
 Preferences that start with the following prefixes are supported: