diff --git a/FAQ.md b/FAQ.md
index 5573a6c..ef28895 100644
--- a/FAQ.md
+++ b/FAQ.md
@@ -466,6 +466,8 @@ You probably have one of below mistakes.
 - You changed from http to https, and blocked `80`, but you still use `http:<domain_name>` or use `https://<domain_name>:21114` or forget to modify, So please double confirm, change api to `https://<domain_name>:443` (`:443` is not required, it is the default https port). Be careful here, it is `https` rather than `http`.
 - `21114` tls port is changed to `443` by rustdesk, https://github.com/rustdesk/rustdesk/discussions/10922#discussioncomment-12336832
 
+For further diagnose, please check the logs on the controlled device for entries similar to `DEBUG [src/server/connection.rs:1103]` error sending request for url. The log file path can be found here: https://github.com/rustdesk/rustdesk/wiki/FAQ#access-logs.
+
 # Unexpected character when log in
 
 ![image](https://github.com/user-attachments/assets/be242a81-298c-43c5-a9c3-c165aeb6600e)