diff --git a/confluent_server/confluent/plugins/hardwaremanagement/deltapdu.py b/confluent_server/confluent/plugins/hardwaremanagement/deltapdu.py
index a413f1e9..7a607545 100644
--- a/confluent_server/confluent/plugins/hardwaremanagement/deltapdu.py
+++ b/confluent_server/confluent/plugins/hardwaremanagement/deltapdu.py
@@ -155,7 +155,9 @@ class PDUClient(object):
         if not username or not passwd:
             raise Exception('Missing username or password')
         body = 'User={0}&Password={1}&B1=Login'.format(username, passwd)
-        self.wc.grab_response('/login.htm', body)
+        rsp = self.wc.grab_response('/login.htm', body)
+        if b'Incorrect User Name' in rsp[0]:
+            raise exc.TargetEndpointBadCredentials()
 
 
     def logout(self):
@@ -184,8 +186,12 @@ def retrieve(nodes, element, configmanager, inputdata):
             yield  msg.ConfluentResourceUnavailable(node, 'Not implemented')
         return
     for node in nodes:
-        gc = PDUClient(node, configmanager)
-        state = gc.get_outlet(element[-1])
+        try:
+            gc = PDUClient(node, configmanager)
+            state = gc.get_outlet(element[-1])
+        except exc.TargetEndpointBadCredentials:
+            yield msg.ConfluentTargetInvalidCredentials(node)
+            continue
         yield msg.PowerState(node=node, state=state)
         gc.logout()
 
diff --git a/confluent_server/confluent/plugins/hardwaremanagement/pdu.py b/confluent_server/confluent/plugins/hardwaremanagement/pdu.py
index 7eaa3330..b19c9b22 100644
--- a/confluent_server/confluent/plugins/hardwaremanagement/pdu.py
+++ b/confluent_server/confluent/plugins/hardwaremanagement/pdu.py
@@ -39,10 +39,13 @@ def retrieve(nodes, element, configmanager, inputdata):
             for pgroup in outlets[node]:
                 pdu = outlets[node][pgroup]['pdu']
                 outlet = outlets[node][pgroup]['outlet']
-                for rsp in core.handle_path(
-                        '/nodes/{0}/power/outlets/{1}'.format(pdu, outlet),
-                        'retrieve', configmanager):
-                    yield msg.KeyValueData({pgroup: rsp.kvpairs['state']['value']}, node)
+                try:
+                    for rsp in core.handle_path(
+                            '/nodes/{0}/power/outlets/{1}'.format(pdu, outlet),
+                            'retrieve', configmanager):
+                        yield msg.KeyValueData({pgroup: rsp.kvpairs['state']['value']}, node)
+                except exc.TargetEndpointBadCredentials:
+                    yield msg.ConfluentTargetInvalidCredentials(pdu)
 
 def get_outlets(nodes, emebs, inletname):
     outlets = {}