diff --git a/FAQ.md b/FAQ.md
index a65e84c..1f92648 100644
--- a/FAQ.md
+++ b/FAQ.md
@@ -661,6 +661,10 @@ Otherwise, please follow below:
 
 - Now, you can connect to RDP via `localhost:1234`.
 
+# What is the callback / clietn id / secret of Azure in Pro?
+
+The callback is the public URL of the API so `https://[yourservername]/api/oidc/callback` as long as you setup https and a public URL.  The Client ID and secret are part of the Azure application setup steps in the instructions [https://rust](https://rustdesk.com/docs/en/self-host/rustdesk-server-pro/oidc/azure/)
+