diff --git a/FAQ.md b/FAQ.md
index 41e0cdf..d8102a7 100644
--- a/FAQ.md
+++ b/FAQ.md
@@ -437,6 +437,14 @@ Please go to custom clients of web console, modify `API` below to correct url, e
 
 Here is a good example, https://github.com/rustdesk/rustdesk/discussions/8999
 
+Some users might see below error
+
+![image](https://github.com/user-attachments/assets/be242a81-298c-43c5-a9c3-c165aeb6600e)
+
+It might be because you used wrong port like this https://github.com/rustdesk/rustdesk-server-pro/issues/396#issuecomment-2564914847
+It also might be because you should use https but you used http like this https://github.com/rustdesk/rustdesk-server-pro/discussions/537#discussioncomment-12200960
+
+
 # Impossible to get Android input permission
 
 https://github.com/rustdesk/rustdesk/issues/4023#issuecomment-1566588786