From c5e90b9ac90eff2630b08eb3205f0a4a74b2d5d7 Mon Sep 17 00:00:00 2001
From: RustDesk <71636191+rustdesk@users.noreply.github.com>
Date: Fri, 6 Jun 2025 03:19:04 +0800
Subject: [PATCH] Updated FAQ (markdown)

---
 FAQ.md | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/FAQ.md b/FAQ.md
index c68ac9a..2ee5050 100644
--- a/FAQ.md
+++ b/FAQ.md
@@ -900,6 +900,8 @@ https://www.reddit.com/r/rustdesk/search/?q=key+mismatch&cId=9300c8dc-ab3b-47dd-
 
 Please make sure there is only one `rustdesk server` (or one `hbbs` process) running especially you change from OSS to Pro.
 
+Please run `ps aux | grep hbbs` to ensure there is one `hbbs` process (case 1), and confirm there is not another machine running another rustdesk server (case 2).
+
 Case 1:
 
 > we confirmed with the client about the public key again, it is correct, but they still have key mismtach error. then we connect to their server with our client, we got key mismatch sometimes, and sometime not. The reason is they are running two rustdesk server processes.