diff --git a/FAQ.md b/FAQ.md
index d7564ac..9ef6084 100644
--- a/FAQ.md
+++ b/FAQ.md
@@ -463,6 +463,9 @@ The controlled side works fine with UDP `21116` port, but it can not connect to
 
 ![image](https://github.com/user-attachments/assets/fd31db2b-4975-4f0e-900f-9b1efd90171a)
 
+# Failed to secure tcp:Handshake failed: invalid public key from rendezvous server: Please try later 
+
+Please check `Setting` -> `Network` -> `Id/relay server` on rustdesk client, and the the screenshot of `Settigns` -> `Key` on the web coonsole. Need to confirm they have the same key (public key).
 
 # Deploy RustDesk server in intranet.