diff --git a/gns3server/compute/dynamips/__init__.py b/gns3server/compute/dynamips/__init__.py
index b1211a47..eae8ab61 100644
--- a/gns3server/compute/dynamips/__init__.py
+++ b/gns3server/compute/dynamips/__init__.py
@@ -252,6 +252,9 @@ class Dynamips(BaseManager):
         # look for Dynamips
         dynamips_path = self.config.settings.Dynamips.dynamips_path
         if not os.path.isabs(dynamips_path):
+            if sys.platform.startswith("win") and hasattr(sys, "frozen"):
+                dynamips_dir = os.path.normpath(os.path.join(os.path.dirname(os.path.abspath(sys.executable)), "dynamips"))
+                os.environ["PATH"] = os.pathsep.join(dynamips_dir) + os.pathsep + os.environ.get("PATH", "")
             dynamips_path = shutil.which(dynamips_path)
 
         if not dynamips_path:
diff --git a/gns3server/compute/vpcs/vpcs_vm.py b/gns3server/compute/vpcs/vpcs_vm.py
index 47e66473..b42c4095 100644
--- a/gns3server/compute/vpcs/vpcs_vm.py
+++ b/gns3server/compute/vpcs/vpcs_vm.py
@@ -142,6 +142,9 @@ class VPCSVM(BaseNode):
 
         vpcs_path = self._manager.config.settings.VPCS.vpcs_path
         if not os.path.isabs(vpcs_path):
+            if sys.platform.startswith("win") and hasattr(sys, "frozen"):
+                vpcs_dir = os.path.normpath(os.path.join(os.path.dirname(os.path.abspath(sys.executable)), "vpcs"))
+                os.environ["PATH"] = os.pathsep.join(vpcs_dir) + os.pathsep + os.environ.get("PATH", "")
             vpcs_path = shutil.which(vpcs_path)
         return vpcs_path