diff --git a/gns3server/handlers/api/server_handler.py b/gns3server/handlers/api/server_handler.py
index 65e8892f..105129f2 100644
--- a/gns3server/handlers/api/server_handler.py
+++ b/gns3server/handlers/api/server_handler.py
@@ -17,8 +17,14 @@
 
 from ...web.route import Route
 from ...config import Config
+from ...modules.project_manager import ProjectManager
 from aiohttp.web import HTTPForbidden
+
 import asyncio
+import logging
+
+log = logging.getLogger(__name__)
+
 
 class ServerHandler:
 
@@ -36,6 +42,24 @@ class ServerHandler:
         if config.get_section_config("Server").getboolean("local", False) is False:
             raise HTTPForbidden(text="You can only stop a local server")
 
+        # close all the projects first
+        pm = ProjectManager.instance()
+        projects = pm.projects
+
+        tasks = []
+        for project in projects:
+            tasks.append(asyncio.async(project.close()))
+
+        if tasks:
+            done, _ = yield from asyncio.wait(tasks)
+            for future in done:
+                try:
+                    future.result()
+                except Exception as e:
+                    log.error("Could not close project {}".format(e), exc_info=1)
+                    continue
+
+        # then shutdown the server itself
         from gns3server.server import Server
         server = Server.instance()
         asyncio.async(server.shutdown_server())
diff --git a/gns3server/modules/iou/iou_vm.py b/gns3server/modules/iou/iou_vm.py
index 7325a8ea..36e2e7c0 100644
--- a/gns3server/modules/iou/iou_vm.py
+++ b/gns3server/modules/iou/iou_vm.py
@@ -401,7 +401,7 @@ class IOUVM(BaseVM):
             if iourc_path and not os.path.isfile(iourc_path):
                 raise IOUError("A valid iourc file is necessary to start IOU")
 
-            license_check = self._manager.config.get_section_config("IOU").getboolean("license_check", True)
+            license_check = self._manager.config.get_section_config("IOU").getboolean("license_check", False)
             if license_check:
                 yield from self._check_iou_licence()
 
diff --git a/gns3server/modules/project_manager.py b/gns3server/modules/project_manager.py
index 454b3114..4ea21612 100644
--- a/gns3server/modules/project_manager.py
+++ b/gns3server/modules/project_manager.py
@@ -42,6 +42,16 @@ class ProjectManager:
             cls._instance = cls()
         return cls._instance
 
+    @property
+    def projects(self):
+        """
+        Returns all projects.
+
+        :returns: Project instances
+        """
+
+        return self._projects.values()
+
     def get_project(self, project_id):
         """
         Returns a Project instance.
diff --git a/gns3server/server.py b/gns3server/server.py
index d1f51471..dca8ff29 100644
--- a/gns3server/server.py
+++ b/gns3server/server.py
@@ -190,8 +190,8 @@ class Server:
             # because asyncio.add_signal_handler() is not supported yet on that platform
             # otherwise the loop runs outside of signal module's ability to trap signals.
             def wakeup():
-                loop.call_later(0.1, wakeup)
-            loop.call_later(0.1, wakeup)
+                loop.call_later(0.5, wakeup)
+            loop.call_later(0.5, wakeup)
             asyncio.set_event_loop(loop)
 
         ssl_context = None