diff --git a/FAQ.md b/FAQ.md
index 2b146d2..2cad2c7 100644
--- a/FAQ.md
+++ b/FAQ.md
@@ -1018,4 +1018,15 @@ This is impossible so far since iOS does not allow this.
 cd %localappdata%\microsoft\windows\explorer
 del iconcache*
 taskkill /F /IM explorer.exe & start explorer
-```
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+```
+
+# Duplicate id of cloned system
+
+You can try deleteing below directories.
+
+```
+%AppData%\RustDesk\
+C:\Windows\ServiceProfiles\LocalService\AppData\Roaming\RustDesk
+```
+
+and reboot the system.
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