diff --git a/FAQ.md b/FAQ.md
index 4e16fcc..a717ecf 100644
--- a/FAQ.md
+++ b/FAQ.md
@@ -238,11 +238,18 @@ However, this layout mode may cause problems with certain programs such as video
 
 This mode is for compatibility with RustDesk <= 1.1.9.
 
+# `deadline has elapsed`
+
+Possible reasons
+- You do not install [`hbbr`](https://github.com/rustdesk/rustdesk-server-pro/discussions/372#discussioncomment-10475836) yet
+- https://github.com/rustdesk/rustdesk-server-pro/discussions/386#discussioncomment-10631971, you do not set relay server explictly when your RustDesk client and `hbbs` are in the same intranet
+- The controlled side is configured with wrong key 
+
 # Force relay
 
 >  RustDesk >= 1.2.0
 
-Some users experience connection problems with `10054` or `deadline has elapsed` (https://github.com/rustdesk/rustdesk-server-pro/discussions/325, it is also possible that you do not install [`hbbr`](https://github.com/rustdesk/rustdesk-server-pro/discussions/372#discussioncomment-10475836) yet, or https://github.com/rustdesk/rustdesk-server-pro/discussions/386#discussioncomment-10631971, you do not set relay server explictly when your RustDesk client and `hbbs` are in the same intranet), broken pipe (os error `32`) error code when using the desktop or mobile client, or an existing connection was forcibly closed by the remote host OS error `10054` after some time repeatedly, but not when using the web client. This is because the web client always uses a relay for connection. To resolve the issue, you can add the suffix '/r' to the remote ID.
+Some users experience connection problems with `10054` or `deadline has elapsed` (https://github.com/rustdesk/rustdesk-server-pro/discussions/325, broken pipe (os error `32`) error code. Try to add the suffix '/r' to the remote ID.
 
 <img width="295" alt="image" src="https://github.com/rustdesk/rustdesk/assets/71636191/98d601ea-f84a-447e-a93b-f48a07850796">