From 7ab04a0f9ab8f507b8d22b586e488b74db8e65f2 Mon Sep 17 00:00:00 2001
From: YueGuobin <yueguobin@outlook.com>
Date: Wed, 3 Jun 2026 12:20:26 +0800
Subject: [PATCH] Add running project check for fast duplication

---
 gns3server/controller/project.py | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/gns3server/controller/project.py b/gns3server/controller/project.py
index aa3b361e1..0526df838 100644
--- a/gns3server/controller/project.py
+++ b/gns3server/controller/project.py
@@ -1334,9 +1334,6 @@ class Project:
         self.dump()
         assert self._status != "closed"
 
-        if self.is_running():
-            raise ControllerError("Project must be stopped in order to duplicate it")
-
         try:
             proj = await self._fast_duplication(name, reset_mac_addresses)
             if proj: