diff --git a/gns3server/controller/__init__.py b/gns3server/controller/__init__.py
index 8dab9463..f624ab1c 100644
--- a/gns3server/controller/__init__.py
+++ b/gns3server/controller/__init__.py
@@ -89,7 +89,7 @@ class Controller:
             try:
                 yield from compute.close()
             # We don't care if a compute is down at this step
-            except aiohttp.errors.ClientOSError:
+            except (aiohttp.errors.ClientOSError, aiohttp.web_exceptions.HTTPError):
                 pass
         yield from self.gns3vm.exit_vm()
         self._computes = {}
diff --git a/gns3server/controller/node.py b/gns3server/controller/node.py
index 63da385d..ada38202 100644
--- a/gns3server/controller/node.py
+++ b/gns3server/controller/node.py
@@ -389,7 +389,7 @@ class Node:
         try:
             yield from self.post("/stop")
         # We don't care if a compute is down at this step
-        except (aiohttp.errors.ClientOSError, aiohttp.errors.ClientHttpProcessingError, aiohttp.web.HTTPNotFound, aiohttp.web.HTTPConflict):
+        except (aiohttp.errors.ClientOSError, aiohttp.errors.ClientHttpProcessingError, aiohttp.web.HTTPError):
             pass
 
     @asyncio.coroutine
diff --git a/gns3server/controller/project.py b/gns3server/controller/project.py
index f5bbfd7b..8637c946 100644
--- a/gns3server/controller/project.py
+++ b/gns3server/controller/project.py
@@ -531,7 +531,7 @@ class Project:
             try:
                 yield from compute.post("/projects/{}/close".format(self._id))
             # We don't care if a compute is down at this step
-            except (aiohttp.errors.ClientOSError, aiohttp.web.HTTPNotFound, aiohttp.web.HTTPConflict):
+            except (aiohttp.errors.ClientOSError, aiohttp.web.HTTPError):
                 pass
         self._cleanPictures()
         self._status = "closed"