diff --git a/tests/test_system.py b/tests/test_system.py
index 4aeb6ef..5340f2e 100644
--- a/tests/test_system.py
+++ b/tests/test_system.py
@@ -27,6 +27,18 @@ class TestSystemWithCheckGarbage(object):
         return windows.system.logicaldrives
 
     def test_wmi(self):
+        # Well, pytest initialize COM with its own parameters
+        # It might make our own com.init() in WMI fail and therefore not call
+        # CoInitializeSecurity. But looks like pytest/default COM-security parameters
+        # does not allow to perform the request we want..
+        # So we try & do it ourself here.
+
+        # Do co-reinit in conftest.py ?
+        try:
+            if windows.com.init(): # if init fail. Call CoInitializeSecurity ourself
+                windows.com.initsecurity()
+        except Exception as e:
+            pass
         return windows.system.wmi.select("Win32_Process", "*")
 
     def test_handles(self):
diff --git a/windows/com.py b/windows/com.py
index ba5cfda..d2213ca 100644
--- a/windows/com.py
+++ b/windows/com.py
@@ -17,9 +17,14 @@ from windows.generated_def.interfaces import generate_IID, IID
 
 def init():
     try:
-        winproxy.CoInitializeEx()
+        t = winproxy.CoInitializeEx()
     except WindowsError as e:
-        return e.winerror
+        t = e.winerror
+    if t:
+        return t
+    return initsecurity()
+
+def initsecurity(): # Should take some parameters..
     return winproxy.CoInitializeSecurity(0, -1, None, 0, 0, RPC_C_IMP_LEVEL_IMPERSONATE, 0,0,0)
 
 
diff --git a/windows/winobject/wmi.py b/windows/winobject/wmi.py
index 4345217..56d41ce 100644
--- a/windows/winobject/wmi.py
+++ b/windows/winobject/wmi.py
@@ -24,6 +24,7 @@ class WmiRequester(object):
 
         windows.com.init()
         windows.com.create_instance(WbemLocator_CLSID, locator)
+        # WBEM_FLAG_CONNECT_USE_MAX_WAIT
         locator.ConnectServer(target, user, password , None, 0x80, None, None, ctypes.byref(service))
         self.service = service