diff --git a/FAQ.md b/FAQ.md
index 499efe4..43f4661 100644
--- a/FAQ.md
+++ b/FAQ.md
@@ -1382,6 +1382,8 @@ https://github.com/rustdesk/rustdesk-server-pro/discussions/307#discussioncommen
 
 https://github.com/rustdesk/rustdesk-server-pro/issues/312
 
+If you want authentication before allowing a device to register, please turn on "Settings" -> "Others" -> "Disable new devices" on web console.
+
 # The new icon for my custom client does not take effect on Windows after I change it.
 
 ```