diff --git a/tempest/common/preprov_creds.py b/tempest/common/preprov_creds.py
index eac7f4e..3781b0c 100644
--- a/tempest/common/preprov_creds.py
+++ b/tempest/common/preprov_creds.py
@@ -18,6 +18,7 @@
 from oslo_concurrency import lockutils
 from oslo_log import log as logging
 import six
+from tempest_lib import auth
 import yaml
 
 from tempest import clients
@@ -280,7 +281,12 @@
 
     def _wrap_creds_with_network(self, hash):
         creds_dict = self.hash_dict['creds'][hash]
-        credential = cred_provider.get_credentials(
+        # Make sure a domain scope if defined for users in case of V3
+        creds_dict = self._extend_credentials(creds_dict)
+        # This just builds a Credentials object, it does not validate
+        # nor fill  with missing fields.
+        credential = auth.get_credentials(
+            auth_url=None, fill_in=False,
             identity_version=self.identity_version, **creds_dict)
         net_creds = cred_provider.TestResources(credential)
         net_clients = clients.Manager(credentials=credential)
@@ -294,6 +300,16 @@
         net_creds.set_resources(network=network)
         return net_creds
 
+    def _extend_credentials(self, creds_dict):
+        # In case of v3, adds a user_domain_name field to the creds
+        # dict if not defined
+        if self.identity_version == 'v3':
+            user_domain_fields = set(['user_domain_name', 'user_domain_id'])
+            if not user_domain_fields.intersection(set(creds_dict.keys())):
+                _domain = CONF.auth.default_credentials_domain_name
+                creds_dict['user_domain_name'] = _domain
+        return creds_dict
+
 
 class NonLockingCredentialProvider(PreProvisionedCredentialProvider):
     """Credentials provider which always returns the first and second
@@ -323,7 +339,8 @@
         if self._creds.get('primary'):
             return self._creds.get('primary')
         primary_credential = cred_provider.get_configured_credentials(
-            credential_type='user', identity_version=self.identity_version)
+            fill_in=False, credential_type='user',
+            identity_version=self.identity_version)
         self._creds['primary'] = cred_provider.TestResources(
             primary_credential)
         return self._creds['primary']
@@ -332,7 +349,7 @@
         if self._creds.get('alt'):
             return self._creds.get('alt')
         alt_credential = cred_provider.get_configured_credentials(
-            credential_type='alt_user',
+            fill_in=False, credential_type='alt_user',
             identity_version=self.identity_version)
         self._creds['alt'] = cred_provider.TestResources(
             alt_credential)
diff --git a/tempest/manager.py b/tempest/manager.py
index 6a003bc..d7c3128 100644
--- a/tempest/manager.py
+++ b/tempest/manager.py
@@ -54,7 +54,7 @@
         else:
             creds = self.credentials
         # Creates an auth provider for the credentials
-        self.auth_provider = get_auth_provider(creds)
+        self.auth_provider = get_auth_provider(creds, pre_auth=True)
         # FIXME(andreaf) unused
         self.client_attr_names = []
 
@@ -66,7 +66,7 @@
         return auth.KeystoneV2AuthProvider, CONF.identity.uri
 
 
-def get_auth_provider(credentials):
+def get_auth_provider(credentials, pre_auth=False):
     default_params = {
         'disable_ssl_certificate_validation':
             CONF.identity.disable_ssl_certificate_validation,
@@ -78,4 +78,8 @@
             'Credentials must be specified')
     auth_provider_class, auth_url = get_auth_provider_class(
         credentials)
-    return auth_provider_class(credentials, auth_url, **default_params)
+    _auth_provider = auth_provider_class(credentials, auth_url,
+                                         **default_params)
+    if pre_auth:
+        _auth_provider.set_auth()
+    return _auth_provider
diff --git a/tempest/scenario/utils.py b/tempest/scenario/utils.py
index 63847c3..12509f7 100644
--- a/tempest/scenario/utils.py
+++ b/tempest/scenario/utils.py
@@ -19,13 +19,13 @@
 
 from oslo_serialization import jsonutils as json
 from tempest_lib.common.utils import misc
+from tempest_lib import exceptions as exc_lib
 import testscenarios
 import testtools
 
 from tempest import clients
 from tempest.common import credentials
 from tempest import config
-from tempest import exceptions
 
 CONF = config.CONF
 
@@ -174,7 +174,7 @@
         scenario_utils = InputScenarioUtils()
         scenario_flavor = scenario_utils.scenario_flavors
         scenario_image = scenario_utils.scenario_images
-    except (exceptions.InvalidConfiguration, TypeError):
+    except (exc_lib.InvalidCredentials, TypeError):
         output = standard_tests
     finally:
         if scenario_utils: