diff --git a/FAQ.md b/FAQ.md
index 537459f..d7564ac 100644
--- a/FAQ.md
+++ b/FAQ.md
@@ -1625,4 +1625,12 @@ https://rustdesk.com/docs/en/self-host/rustdesk-server-pro/permissions/
 
 Address books are used to organize devices and manage passwords.
 
-https://github.com/rustdesk/rustdesk-server-pro/discussions/809
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+https://github.com/rustdesk/rustdesk-server-pro/discussions/809
+
+# Upgrade RustDesk Server Pro on Windows.
+
+If you install with RustDeskServer.setup.exe. Please backup db files and id_ed25519 files etc first. These files are located in two folders.
+
+The db files are under `C:\WINDOWS\ServiceProfiles\LocalService\AppData\Roaming\RustDesk\config\`, the other files are under `C:\Program Files\RustDeskServer\bin`. You can backup the two directory directly.
+
+Then please download the new RustDeskServer.setup.exe and run directly.
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