diff --git a/tempest/api/compute/admin/test_aggregates_negative.py b/tempest/api/compute/admin/test_aggregates_negative.py
index 6868fa61f4..48f6f94be4 100644
--- a/tempest/api/compute/admin/test_aggregates_negative.py
+++ b/tempest/api/compute/admin/test_aggregates_negative.py
@@ -45,7 +45,7 @@ class AggregatesAdminNegativeTestJSON(base.BaseV2ComputeAdminTest):
     def test_aggregate_create_as_user(self):
         # Regular user is not allowed to create an aggregate.
         aggregate_name = data_utils.rand_name(self.aggregate_name_prefix)
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.user_client.create_aggregate,
                           name=aggregate_name)
 
@@ -82,14 +82,14 @@ class AggregatesAdminNegativeTestJSON(base.BaseV2ComputeAdminTest):
         aggregate = self.client.create_aggregate(name=aggregate_name)
         self.addCleanup(self.client.delete_aggregate, aggregate['id'])
 
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.user_client.delete_aggregate,
                           aggregate['id'])
 
     @test.attr(type=['negative', 'gate'])
     def test_aggregate_list_as_user(self):
         # Regular user is not allowed to list aggregates.
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.user_client.list_aggregates)
 
     @test.attr(type=['negative', 'gate'])
@@ -99,7 +99,7 @@ class AggregatesAdminNegativeTestJSON(base.BaseV2ComputeAdminTest):
         aggregate = self.client.create_aggregate(name=aggregate_name)
         self.addCleanup(self.client.delete_aggregate, aggregate['id'])
 
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.user_client.get_aggregate,
                           aggregate['id'])
 
@@ -139,7 +139,7 @@ class AggregatesAdminNegativeTestJSON(base.BaseV2ComputeAdminTest):
         aggregate = self.client.create_aggregate(name=aggregate_name)
         self.addCleanup(self.client.delete_aggregate, aggregate['id'])
 
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.user_client.add_host,
                           aggregate['id'], self.host)
 
@@ -166,7 +166,7 @@ class AggregatesAdminNegativeTestJSON(base.BaseV2ComputeAdminTest):
         self.client.add_host(aggregate['id'], self.host)
         self.addCleanup(self.client.remove_host, aggregate['id'], self.host)
 
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.user_client.remove_host,
                           aggregate['id'], self.host)
 
diff --git a/tempest/api/compute/admin/test_availability_zone_negative.py b/tempest/api/compute/admin/test_availability_zone_negative.py
index d062b0c656..546aa3b052 100644
--- a/tempest/api/compute/admin/test_availability_zone_negative.py
+++ b/tempest/api/compute/admin/test_availability_zone_negative.py
@@ -12,8 +12,9 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.compute import base
-from tempest import exceptions
 from tempest import test
 
 
@@ -33,5 +34,5 @@ class AZAdminNegativeTestJSON(base.BaseV2ComputeAdminTest):
         # List of availability zones and available services with
         # non-administrator user
         self.assertRaises(
-            exceptions.Unauthorized,
+            lib_exc.Unauthorized,
             self.non_adm_client.get_availability_zone_list_detail)
diff --git a/tempest/api/compute/admin/test_fixed_ips_negative.py b/tempest/api/compute/admin/test_fixed_ips_negative.py
index 310b4dd3df..bb5fa8c7b3 100644
--- a/tempest/api/compute/admin/test_fixed_ips_negative.py
+++ b/tempest/api/compute/admin/test_fixed_ips_negative.py
@@ -45,14 +45,14 @@ class FixedIPsNegativeTestJson(base.BaseV2ComputeAdminTest):
     @test.attr(type=['negative', 'gate'])
     @test.services('network')
     def test_list_fixed_ip_details_with_non_admin_user(self):
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.non_admin_client.get_fixed_ip_details, self.ip)
 
     @test.attr(type=['negative', 'gate'])
     @test.services('network')
     def test_set_reserve_with_non_admin_user(self):
         body = {"reserve": "None"}
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.non_admin_client.reserve_fixed_ip,
                           self.ip, body)
 
@@ -60,7 +60,7 @@ class FixedIPsNegativeTestJson(base.BaseV2ComputeAdminTest):
     @test.services('network')
     def test_set_unreserve_with_non_admin_user(self):
         body = {"unreserve": "None"}
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.non_admin_client.reserve_fixed_ip,
                           self.ip, body)
 
diff --git a/tempest/api/compute/admin/test_flavors_access_negative.py b/tempest/api/compute/admin/test_flavors_access_negative.py
index a31d16355a..5031432c56 100644
--- a/tempest/api/compute/admin/test_flavors_access_negative.py
+++ b/tempest/api/compute/admin/test_flavors_access_negative.py
@@ -18,7 +18,6 @@ import uuid
 
 from tempest.api.compute import base
 from tempest.common.utils import data_utils
-from tempest import exceptions
 from tempest import test
 
 
@@ -69,7 +68,7 @@ class FlavorsAccessNegativeTestJSON(base.BaseV2ComputeAdminTest):
                                                new_flavor_id,
                                                is_public='False')
         self.addCleanup(self.client.delete_flavor, new_flavor['id'])
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.flavors_client.add_flavor_access,
                           new_flavor['id'],
                           self.tenant_id)
@@ -89,7 +88,7 @@ class FlavorsAccessNegativeTestJSON(base.BaseV2ComputeAdminTest):
         self.client.add_flavor_access(new_flavor['id'], self.tenant_id)
         self.addCleanup(self.client.remove_flavor_access,
                         new_flavor['id'], self.tenant_id)
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.flavors_client.remove_flavor_access,
                           new_flavor['id'],
                           self.tenant_id)
diff --git a/tempest/api/compute/admin/test_flavors_extra_specs_negative.py b/tempest/api/compute/admin/test_flavors_extra_specs_negative.py
index 5249c32332..e414973f14 100644
--- a/tempest/api/compute/admin/test_flavors_extra_specs_negative.py
+++ b/tempest/api/compute/admin/test_flavors_extra_specs_negative.py
@@ -63,7 +63,7 @@ class FlavorsExtraSpecsNegativeTestJSON(base.BaseV2ComputeAdminTest):
     def test_flavor_non_admin_set_keys(self):
         # Test to SET flavor extra spec as a user without admin privileges.
         specs = {"key1": "value1", "key2": "value2"}
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.flavors_client.set_flavor_extra_spec,
                           self.flavor['id'],
                           specs)
@@ -75,7 +75,7 @@ class FlavorsExtraSpecsNegativeTestJSON(base.BaseV2ComputeAdminTest):
         body = self.client.set_flavor_extra_spec(
             self.flavor['id'], specs)
         self.assertEqual(body['key1'], 'value1')
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.flavors_client.
                           update_flavor_extra_spec,
                           self.flavor['id'],
@@ -87,7 +87,7 @@ class FlavorsExtraSpecsNegativeTestJSON(base.BaseV2ComputeAdminTest):
         specs = {"key1": "value1", "key2": "value2"}
         self.client.set_flavor_extra_spec(self.flavor['id'], specs)
 
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.flavors_client.unset_flavor_extra_spec,
                           self.flavor['id'],
                           'key1')
diff --git a/tempest/api/compute/admin/test_flavors_negative.py b/tempest/api/compute/admin/test_flavors_negative.py
index 86125fb457..34d8e3ff6d 100644
--- a/tempest/api/compute/admin/test_flavors_negative.py
+++ b/tempest/api/compute/admin/test_flavors_negative.py
@@ -15,11 +15,12 @@
 
 import uuid
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.compute import base
 from tempest.api_schema.request.compute.v2 import flavors
 from tempest.common.utils import data_utils
 from tempest import config
-from tempest import exceptions
 from tempest import test
 
 
@@ -88,7 +89,7 @@ class FlavorsAdminNegativeTestJSON(base.BaseV2ComputeAdminTest):
         flavor_name = data_utils.rand_name(self.flavor_name_prefix)
         new_flavor_id = str(uuid.uuid4())
 
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.user_client.create_flavor,
                           flavor_name, self.ram, self.vcpus, self.disk,
                           new_flavor_id, ephemeral=self.ephemeral,
@@ -97,7 +98,7 @@ class FlavorsAdminNegativeTestJSON(base.BaseV2ComputeAdminTest):
     @test.attr(type=['negative', 'gate'])
     def test_delete_flavor_as_user(self):
         # only admin user can delete a flavor
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.user_client.delete_flavor,
                           self.flavor_ref_alt)
 
diff --git a/tempest/api/compute/admin/test_hosts_negative.py b/tempest/api/compute/admin/test_hosts_negative.py
index 51caef50ec..20429b18af 100644
--- a/tempest/api/compute/admin/test_hosts_negative.py
+++ b/tempest/api/compute/admin/test_hosts_negative.py
@@ -40,7 +40,7 @@ class HostsAdminNegativeTestJSON(base.BaseV2ComputeAdminTest):
 
     @test.attr(type=['negative', 'gate'])
     def test_list_hosts_with_non_admin_user(self):
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.non_admin_client.list_hosts)
 
     @test.attr(type=['negative', 'gate'])
@@ -53,7 +53,7 @@ class HostsAdminNegativeTestJSON(base.BaseV2ComputeAdminTest):
     def test_show_host_detail_with_non_admin_user(self):
         hostname = self._get_host_name()
 
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.non_admin_client.show_host_detail,
                           hostname)
 
@@ -61,7 +61,7 @@ class HostsAdminNegativeTestJSON(base.BaseV2ComputeAdminTest):
     def test_update_host_with_non_admin_user(self):
         hostname = self._get_host_name()
 
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.non_admin_client.update_host,
                           hostname,
                           status='enable',
@@ -132,7 +132,7 @@ class HostsAdminNegativeTestJSON(base.BaseV2ComputeAdminTest):
     def test_startup_host_with_non_admin_user(self):
         hostname = self._get_host_name()
 
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.non_admin_client.startup_host,
                           hostname)
 
@@ -148,7 +148,7 @@ class HostsAdminNegativeTestJSON(base.BaseV2ComputeAdminTest):
     def test_shutdown_host_with_non_admin_user(self):
         hostname = self._get_host_name()
 
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.non_admin_client.shutdown_host,
                           hostname)
 
@@ -164,6 +164,6 @@ class HostsAdminNegativeTestJSON(base.BaseV2ComputeAdminTest):
     def test_reboot_host_with_non_admin_user(self):
         hostname = self._get_host_name()
 
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.non_admin_client.reboot_host,
                           hostname)
diff --git a/tempest/api/compute/admin/test_hypervisor_negative.py b/tempest/api/compute/admin/test_hypervisor_negative.py
index cb973e1adb..a9c1cb1414 100644
--- a/tempest/api/compute/admin/test_hypervisor_negative.py
+++ b/tempest/api/compute/admin/test_hypervisor_negative.py
@@ -18,7 +18,6 @@ import uuid
 
 from tempest.api.compute import base
 from tempest.common.utils import data_utils
-from tempest import exceptions
 from tempest import test
 
 
@@ -54,7 +53,7 @@ class HypervisorAdminNegativeTestJSON(base.BaseV2ComputeAdminTest):
         self.assertTrue(len(hypers) > 0)
 
         self.assertRaises(
-            exceptions.Unauthorized,
+            lib_exc.Unauthorized,
             self.non_adm_client.get_hypervisor_show_details,
             hypers[0]['id'])
 
@@ -64,7 +63,7 @@ class HypervisorAdminNegativeTestJSON(base.BaseV2ComputeAdminTest):
         self.assertTrue(len(hypers) > 0)
 
         self.assertRaises(
-            exceptions.Unauthorized,
+            lib_exc.Unauthorized,
             self.non_adm_client.get_hypervisor_servers,
             hypers[0]['id'])
 
@@ -80,7 +79,7 @@ class HypervisorAdminNegativeTestJSON(base.BaseV2ComputeAdminTest):
     @test.attr(type=['negative', 'gate'])
     def test_get_hypervisor_stats_with_non_admin_user(self):
         self.assertRaises(
-            exceptions.Unauthorized,
+            lib_exc.Unauthorized,
             self.non_adm_client.get_hypervisor_stats)
 
     @test.attr(type=['negative', 'gate'])
@@ -98,7 +97,7 @@ class HypervisorAdminNegativeTestJSON(base.BaseV2ComputeAdminTest):
         self.assertTrue(len(hypers) > 0)
 
         self.assertRaises(
-            exceptions.Unauthorized,
+            lib_exc.Unauthorized,
             self.non_adm_client.get_hypervisor_uptime,
             hypers[0]['id'])
 
@@ -106,14 +105,14 @@ class HypervisorAdminNegativeTestJSON(base.BaseV2ComputeAdminTest):
     def test_get_hypervisor_list_with_non_admin_user(self):
         # List of hypervisor and available services with non admin user
         self.assertRaises(
-            exceptions.Unauthorized,
+            lib_exc.Unauthorized,
             self.non_adm_client.get_hypervisor_list)
 
     @test.attr(type=['negative', 'gate'])
     def test_get_hypervisor_list_details_with_non_admin_user(self):
         # List of hypervisor details and available services with non admin user
         self.assertRaises(
-            exceptions.Unauthorized,
+            lib_exc.Unauthorized,
             self.non_adm_client.get_hypervisor_list_details)
 
     @test.attr(type=['negative', 'gate'])
@@ -131,6 +130,6 @@ class HypervisorAdminNegativeTestJSON(base.BaseV2ComputeAdminTest):
         self.assertTrue(len(hypers) > 0)
 
         self.assertRaises(
-            exceptions.Unauthorized,
+            lib_exc.Unauthorized,
             self.non_adm_client.search_hypervisor,
             hypers[0]['hypervisor_hostname'])
diff --git a/tempest/api/compute/admin/test_instance_usage_audit_log_negative.py b/tempest/api/compute/admin/test_instance_usage_audit_log_negative.py
index c4905d919d..1e03bd0122 100644
--- a/tempest/api/compute/admin/test_instance_usage_audit_log_negative.py
+++ b/tempest/api/compute/admin/test_instance_usage_audit_log_negative.py
@@ -16,6 +16,8 @@
 import datetime
 import urllib
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.compute import base
 from tempest import exceptions
 from tempest import test
@@ -31,11 +33,11 @@ class InstanceUsageAuditLogNegativeTestJSON(base.BaseV2ComputeAdminTest):
     @test.attr(type=['negative', 'gate'])
     def test_instance_usage_audit_logs_with_nonadmin_user(self):
         # the instance_usage_audit_logs API just can be accessed by admin user
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.instance_usages_audit_log_client.
                           list_instance_usage_audit_logs)
         now = datetime.datetime.now()
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.instance_usages_audit_log_client.
                           get_instance_usage_audit_log,
                           urllib.quote(now.strftime("%Y-%m-%d %H:%M:%S")))
diff --git a/tempest/api/compute/admin/test_quotas_negative.py b/tempest/api/compute/admin/test_quotas_negative.py
index e86cb8c839..2fb7be66d3 100644
--- a/tempest/api/compute/admin/test_quotas_negative.py
+++ b/tempest/api/compute/admin/test_quotas_negative.py
@@ -18,7 +18,6 @@ from tempest_lib import exceptions as lib_exc
 from tempest.api.compute import base
 from tempest.common.utils import data_utils
 from tempest import config
-from tempest import exceptions
 from tempest import test
 
 CONF = config.CONF
@@ -40,7 +39,7 @@ class QuotasAdminNegativeTestJSON(base.BaseV2ComputeAdminTest):
 
     @test.attr(type=['negative', 'gate'])
     def test_update_quota_normal_user(self):
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.client.update_quota_set,
                           self.demo_tenant_id,
                           ram=0)
@@ -60,7 +59,7 @@ class QuotasAdminNegativeTestJSON(base.BaseV2ComputeAdminTest):
 
         self.addCleanup(self.adm_client.update_quota_set, self.demo_tenant_id,
                         cores=default_vcpu_quota)
-        self.assertRaises((exceptions.Unauthorized, lib_exc.OverLimit),
+        self.assertRaises((lib_exc.Unauthorized, lib_exc.OverLimit),
                           self.create_test_server)
 
     @test.attr(type=['negative', 'gate'])
@@ -76,7 +75,7 @@ class QuotasAdminNegativeTestJSON(base.BaseV2ComputeAdminTest):
 
         self.addCleanup(self.adm_client.update_quota_set, self.demo_tenant_id,
                         ram=default_mem_quota)
-        self.assertRaises((exceptions.Unauthorized, lib_exc.OverLimit),
+        self.assertRaises((lib_exc.Unauthorized, lib_exc.OverLimit),
                           self.create_test_server)
 
     @test.attr(type=['negative', 'gate'])
@@ -91,7 +90,7 @@ class QuotasAdminNegativeTestJSON(base.BaseV2ComputeAdminTest):
                                          instances=instances_quota)
         self.addCleanup(self.adm_client.update_quota_set, self.demo_tenant_id,
                         instances=default_instances_quota)
-        self.assertRaises((exceptions.Unauthorized, lib_exc.OverLimit),
+        self.assertRaises((lib_exc.Unauthorized, lib_exc.OverLimit),
                           self.create_test_server)
 
     @decorators.skip_because(bug="1186354",
@@ -117,7 +116,7 @@ class QuotasAdminNegativeTestJSON(base.BaseV2ComputeAdminTest):
         # Check we cannot create anymore
         # A 403 Forbidden or 413 Overlimit (old behaviour) exception
         # will be raised when out of quota
-        self.assertRaises((exceptions.Unauthorized, lib_exc.OverLimit),
+        self.assertRaises((lib_exc.Unauthorized, lib_exc.OverLimit),
                           self.sg_client.create_security_group,
                           "sg-overlimit", "sg-desc")
 
@@ -156,6 +155,6 @@ class QuotasAdminNegativeTestJSON(base.BaseV2ComputeAdminTest):
         # Check we cannot create SG rule anymore
         # A 403 Forbidden or 413 Overlimit (old behaviour) exception
         # will be raised when out of quota
-        self.assertRaises((lib_exc.OverLimit, exceptions.Unauthorized),
+        self.assertRaises((lib_exc.OverLimit, lib_exc.Unauthorized),
                           self.sg_client.create_security_group_rule,
                           secgroup_id, ip_protocol, 1025, 1025)
diff --git a/tempest/api/compute/admin/test_servers_negative.py b/tempest/api/compute/admin/test_servers_negative.py
index ab1ed81a34..0d4731d29b 100644
--- a/tempest/api/compute/admin/test_servers_negative.py
+++ b/tempest/api/compute/admin/test_servers_negative.py
@@ -72,7 +72,7 @@ class ServersAdminNegativeTestJSON(base.BaseV2ComputeAdminTest):
                                                        ram, vcpus, disk,
                                                        flavor_id)
         self.addCleanup(self.flavors_client.delete_flavor, flavor_id)
-        self.assertRaises((exceptions.Unauthorized, lib_exc.OverLimit),
+        self.assertRaises((lib_exc.Unauthorized, lib_exc.OverLimit),
                           self.client.resize,
                           self.servers[0]['id'],
                           flavor_ref['id'])
@@ -93,7 +93,7 @@ class ServersAdminNegativeTestJSON(base.BaseV2ComputeAdminTest):
                                                        ram, vcpus, disk,
                                                        flavor_id)
         self.addCleanup(self.flavors_client.delete_flavor, flavor_id)
-        self.assertRaises((exceptions.Unauthorized, lib_exc.OverLimit),
+        self.assertRaises((lib_exc.Unauthorized, lib_exc.OverLimit),
                           self.client.resize,
                           self.servers[0]['id'],
                           flavor_ref['id'])
@@ -118,7 +118,7 @@ class ServersAdminNegativeTestJSON(base.BaseV2ComputeAdminTest):
     @test.attr(type=['negative', 'gate'])
     def test_get_server_diagnostics_by_non_admin(self):
         # Non-admin user can not view server diagnostics according to policy
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.non_adm_client.get_server_diagnostics,
                           self.s1_id)
 
diff --git a/tempest/api/compute/admin/test_services_negative.py b/tempest/api/compute/admin/test_services_negative.py
index bb19a392e7..39d0ee138e 100644
--- a/tempest/api/compute/admin/test_services_negative.py
+++ b/tempest/api/compute/admin/test_services_negative.py
@@ -12,8 +12,9 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.compute import base
-from tempest import exceptions
 from tempest import test
 
 
@@ -31,7 +32,7 @@ class ServicesAdminNegativeTestJSON(base.BaseV2ComputeAdminTest):
 
     @test.attr(type=['negative', 'gate'])
     def test_list_services_with_non_admin_user(self):
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.non_admin_client.list_services)
 
     @test.attr(type=['negative', 'gate'])
diff --git a/tempest/api/compute/admin/test_simple_tenant_usage_negative.py b/tempest/api/compute/admin/test_simple_tenant_usage_negative.py
index da8ba35420..b371f2dfde 100644
--- a/tempest/api/compute/admin/test_simple_tenant_usage_negative.py
+++ b/tempest/api/compute/admin/test_simple_tenant_usage_negative.py
@@ -62,5 +62,5 @@ class TenantUsagesNegativeTestJSON(base.BaseV2ComputeAdminTest):
         params = {'start': self.start,
                   'end': self.end,
                   'detailed': int(bool(True))}
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.client.list_tenant_usages, params)
diff --git a/tempest/api/compute/limits/test_absolute_limits_negative.py b/tempest/api/compute/limits/test_absolute_limits_negative.py
index 42adbfe930..9776db3d85 100644
--- a/tempest/api/compute/limits/test_absolute_limits_negative.py
+++ b/tempest/api/compute/limits/test_absolute_limits_negative.py
@@ -17,7 +17,6 @@ from tempest_lib import exceptions as lib_exc
 
 from tempest.api.compute import base
 from tempest.common import tempest_fixtures as fixtures
-from tempest import exceptions
 from tempest import test
 
 
@@ -53,5 +52,5 @@ class AbsoluteLimitsNegativeTestJSON(base.BaseV2ComputeTest):
 
         # A 403 Forbidden or 413 Overlimit (old behaviour) exception
         # will be raised when out of quota
-        self.assertRaises((exceptions.Unauthorized, lib_exc.OverLimit),
+        self.assertRaises((lib_exc.Unauthorized, lib_exc.OverLimit),
                           self.create_test_server, meta=meta_data)
diff --git a/tempest/api/compute/servers/test_server_metadata_negative.py b/tempest/api/compute/servers/test_server_metadata_negative.py
index 7b488f92f6..7fe95dd008 100644
--- a/tempest/api/compute/servers/test_server_metadata_negative.py
+++ b/tempest/api/compute/servers/test_server_metadata_negative.py
@@ -132,14 +132,14 @@ class ServerMetadataNegativeTestJSON(base.BaseV2ComputeTest):
         req_metadata = {}
         for num in range(1, quota_metadata + 2):
             req_metadata['key' + str(num)] = 'val' + str(num)
-        self.assertRaises((lib_exc.OverLimit, exceptions.Unauthorized),
+        self.assertRaises((lib_exc.OverLimit, lib_exc.Unauthorized),
                           self.client.set_server_metadata,
                           self.server_id, req_metadata)
 
         # A 403 Forbidden or 413 Overlimit (old behaviour) exception
         # will be raised while exceeding metadata items limit for
         # tenant.
-        self.assertRaises((exceptions.Unauthorized, lib_exc.OverLimit),
+        self.assertRaises((lib_exc.Unauthorized, lib_exc.OverLimit),
                           self.client.update_server_metadata,
                           self.server_id, req_metadata)
 
diff --git a/tempest/api/compute/servers/test_server_personality.py b/tempest/api/compute/servers/test_server_personality.py
index 55f90c8e4c..bd3ebb027f 100644
--- a/tempest/api/compute/servers/test_server_personality.py
+++ b/tempest/api/compute/servers/test_server_personality.py
@@ -17,7 +17,6 @@ import base64
 from tempest_lib import exceptions as lib_exc
 
 from tempest.api.compute import base
-from tempest import exceptions
 from tempest import test
 
 
@@ -45,7 +44,7 @@ class ServerPersonalityTestJSON(base.BaseV2ComputeTest):
                                 'contents': base64.b64encode(file_contents)})
         # A 403 Forbidden or 413 Overlimit (old behaviour) exception
         # will be raised when out of quota
-        self.assertRaises((exceptions.Unauthorized, lib_exc.OverLimit),
+        self.assertRaises((lib_exc.Unauthorized, lib_exc.OverLimit),
                           self.create_test_server, personality=personality)
 
     @test.attr(type='gate')
diff --git a/tempest/api/identity/admin/test_roles_negative.py b/tempest/api/identity/admin/test_roles_negative.py
index 679db13689..789e8b6b3a 100644
--- a/tempest/api/identity/admin/test_roles_negative.py
+++ b/tempest/api/identity/admin/test_roles_negative.py
@@ -36,7 +36,7 @@ class RolesNegativeTestJSON(base.BaseIdentityV2AdminTest):
     @test.attr(type=['negative', 'gate'])
     def test_list_roles_by_unauthorized_user(self):
         # Non-administrator user should not be able to list roles
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.non_admin_client.list_roles)
 
     @test.attr(type=['negative', 'gate'])
@@ -44,7 +44,7 @@ class RolesNegativeTestJSON(base.BaseIdentityV2AdminTest):
         # Request to list roles without a valid token should fail
         token = self.client.auth_provider.get_token()
         self.client.delete_token(token)
-        self.assertRaises(exceptions.Unauthorized, self.client.list_roles)
+        self.assertRaises(lib_exc.Unauthorized, self.client.list_roles)
         self.client.auth_provider.clear_auth()
 
     @test.attr(type=['negative', 'gate'])
@@ -56,7 +56,7 @@ class RolesNegativeTestJSON(base.BaseIdentityV2AdminTest):
     def test_create_role_by_unauthorized_user(self):
         # Non-administrator user should not be able to create role
         role_name = data_utils.rand_name(name='role-')
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.non_admin_client.create_role, role_name)
 
     @test.attr(type=['negative', 'gate'])
@@ -65,7 +65,7 @@ class RolesNegativeTestJSON(base.BaseIdentityV2AdminTest):
         token = self.client.auth_provider.get_token()
         self.client.delete_token(token)
         role_name = data_utils.rand_name(name='role-')
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.client.create_role, role_name)
         self.client.auth_provider.clear_auth()
 
@@ -86,7 +86,7 @@ class RolesNegativeTestJSON(base.BaseIdentityV2AdminTest):
         body = self.client.create_role(role_name)
         self.data.roles.append(body)
         role_id = body.get('id')
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.non_admin_client.delete_role, role_id)
 
     @test.attr(type=['negative', 'gate'])
@@ -98,7 +98,7 @@ class RolesNegativeTestJSON(base.BaseIdentityV2AdminTest):
         role_id = body.get('id')
         token = self.client.auth_provider.get_token()
         self.client.delete_token(token)
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.client.delete_role,
                           role_id)
         self.client.auth_provider.clear_auth()
@@ -115,7 +115,7 @@ class RolesNegativeTestJSON(base.BaseIdentityV2AdminTest):
         # Non-administrator user should not be authorized to
         # assign a role to user
         (user, tenant, role) = self._get_role_params()
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.non_admin_client.assign_user_role,
                           tenant['id'], user['id'], role['id'])
 
@@ -125,7 +125,7 @@ class RolesNegativeTestJSON(base.BaseIdentityV2AdminTest):
         (user, tenant, role) = self._get_role_params()
         token = self.client.auth_provider.get_token()
         self.client.delete_token(token)
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.client.assign_user_role, tenant['id'],
                           user['id'], role['id'])
         self.client.auth_provider.clear_auth()
@@ -162,7 +162,7 @@ class RolesNegativeTestJSON(base.BaseIdentityV2AdminTest):
         self.client.assign_user_role(tenant['id'],
                                      user['id'],
                                      role['id'])
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.non_admin_client.remove_user_role,
                           tenant['id'], user['id'], role['id'])
 
@@ -175,7 +175,7 @@ class RolesNegativeTestJSON(base.BaseIdentityV2AdminTest):
                                      role['id'])
         token = self.client.auth_provider.get_token()
         self.client.delete_token(token)
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.client.remove_user_role, tenant['id'],
                           user['id'], role['id'])
         self.client.auth_provider.clear_auth()
@@ -208,7 +208,7 @@ class RolesNegativeTestJSON(base.BaseIdentityV2AdminTest):
         # a user's roles
         (user, tenant, role) = self._get_role_params()
         self.client.assign_user_role(tenant['id'], user['id'], role['id'])
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.non_admin_client.list_user_roles, tenant['id'],
                           user['id'])
 
@@ -219,7 +219,7 @@ class RolesNegativeTestJSON(base.BaseIdentityV2AdminTest):
         token = self.client.auth_provider.get_token()
         self.client.delete_token(token)
         try:
-            self.assertRaises(exceptions.Unauthorized,
+            self.assertRaises(lib_exc.Unauthorized,
                               self.client.list_user_roles, tenant['id'],
                               user['id'])
         finally:
diff --git a/tempest/api/identity/admin/test_tenant_negative.py b/tempest/api/identity/admin/test_tenant_negative.py
index 81ba6ffbbf..a4bf2630c0 100644
--- a/tempest/api/identity/admin/test_tenant_negative.py
+++ b/tempest/api/identity/admin/test_tenant_negative.py
@@ -28,7 +28,7 @@ class TenantsNegativeTestJSON(base.BaseIdentityV2AdminTest):
     @test.attr(type=['negative', 'gate'])
     def test_list_tenants_by_unauthorized_user(self):
         # Non-administrator user should not be able to list tenants
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.non_admin_client.list_tenants)
 
     @test.attr(type=['negative', 'gate'])
@@ -36,7 +36,7 @@ class TenantsNegativeTestJSON(base.BaseIdentityV2AdminTest):
         # Request to list tenants without a valid token should fail
         token = self.client.auth_provider.get_token()
         self.client.delete_token(token)
-        self.assertRaises(exceptions.Unauthorized, self.client.list_tenants)
+        self.assertRaises(lib_exc.Unauthorized, self.client.list_tenants)
         self.client.auth_provider.clear_auth()
 
     @test.attr(type=['negative', 'gate'])
@@ -45,7 +45,7 @@ class TenantsNegativeTestJSON(base.BaseIdentityV2AdminTest):
         tenant_name = data_utils.rand_name(name='tenant-')
         tenant = self.client.create_tenant(tenant_name)
         self.data.tenants.append(tenant)
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.non_admin_client.delete_tenant, tenant['id'])
 
     @test.attr(type=['negative', 'gate'])
@@ -56,7 +56,7 @@ class TenantsNegativeTestJSON(base.BaseIdentityV2AdminTest):
         self.data.tenants.append(tenant)
         token = self.client.auth_provider.get_token()
         self.client.delete_token(token)
-        self.assertRaises(exceptions.Unauthorized, self.client.delete_tenant,
+        self.assertRaises(lib_exc.Unauthorized, self.client.delete_tenant,
                           tenant['id'])
         self.client.auth_provider.clear_auth()
 
@@ -84,7 +84,7 @@ class TenantsNegativeTestJSON(base.BaseIdentityV2AdminTest):
     def test_create_tenant_by_unauthorized_user(self):
         # Non-administrator user should not be authorized to create a tenant
         tenant_name = data_utils.rand_name(name='tenant-')
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.non_admin_client.create_tenant, tenant_name)
 
     @test.attr(type=['negative', 'gate'])
@@ -93,7 +93,7 @@ class TenantsNegativeTestJSON(base.BaseIdentityV2AdminTest):
         tenant_name = data_utils.rand_name(name='tenant-')
         token = self.client.auth_provider.get_token()
         self.client.delete_token(token)
-        self.assertRaises(exceptions.Unauthorized, self.client.create_tenant,
+        self.assertRaises(lib_exc.Unauthorized, self.client.create_tenant,
                           tenant_name)
         self.client.auth_provider.clear_auth()
 
@@ -122,7 +122,7 @@ class TenantsNegativeTestJSON(base.BaseIdentityV2AdminTest):
         tenant_name = data_utils.rand_name(name='tenant-')
         tenant = self.client.create_tenant(tenant_name)
         self.data.tenants.append(tenant)
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.non_admin_client.update_tenant, tenant['id'])
 
     @test.attr(type=['negative', 'gate'])
@@ -133,6 +133,6 @@ class TenantsNegativeTestJSON(base.BaseIdentityV2AdminTest):
         self.data.tenants.append(tenant)
         token = self.client.auth_provider.get_token()
         self.client.delete_token(token)
-        self.assertRaises(exceptions.Unauthorized, self.client.update_tenant,
+        self.assertRaises(lib_exc.Unauthorized, self.client.update_tenant,
                           tenant['id'])
         self.client.auth_provider.clear_auth()
diff --git a/tempest/api/identity/admin/test_users_negative.py b/tempest/api/identity/admin/test_users_negative.py
index a3a3e2401f..33a2f355de 100644
--- a/tempest/api/identity/admin/test_users_negative.py
+++ b/tempest/api/identity/admin/test_users_negative.py
@@ -36,7 +36,7 @@ class UsersNegativeTestJSON(base.BaseIdentityV2AdminTest):
     def test_create_user_by_unauthorized_user(self):
         # Non-administrator should not be authorized to create a user
         self.data.setup_test_tenant()
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.non_admin_client.create_user, self.alt_user,
                           self.alt_password, self.data.tenant['id'],
                           self.alt_email)
@@ -80,7 +80,7 @@ class UsersNegativeTestJSON(base.BaseIdentityV2AdminTest):
         token = self.client.auth_provider.get_token()
         # Delete the token from database
         self.client.delete_token(token)
-        self.assertRaises(exceptions.Unauthorized, self.client.create_user,
+        self.assertRaises(lib_exc.Unauthorized, self.client.create_user,
                           self.alt_user, self.alt_password,
                           self.data.tenant['id'], self.alt_email)
 
@@ -113,7 +113,7 @@ class UsersNegativeTestJSON(base.BaseIdentityV2AdminTest):
         token = self.client.auth_provider.get_token()
         # Delete the token from database
         self.client.delete_token(token)
-        self.assertRaises(exceptions.Unauthorized, self.client.update_user,
+        self.assertRaises(lib_exc.Unauthorized, self.client.update_user,
                           self.alt_user)
 
         # Unset the token to allow further tests to generate a new token
@@ -123,14 +123,14 @@ class UsersNegativeTestJSON(base.BaseIdentityV2AdminTest):
     def test_update_user_by_unauthorized_user(self):
         # Non-administrator should not be authorized to update user
         self.data.setup_test_tenant()
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.non_admin_client.update_user, self.alt_user)
 
     @test.attr(type=['negative', 'gate'])
     def test_delete_users_by_unauthorized_user(self):
         # Non-administrator user should not be authorized to delete a user
         self.data.setup_test_user()
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.non_admin_client.delete_user,
                           self.data.user['id'])
 
@@ -148,7 +148,7 @@ class UsersNegativeTestJSON(base.BaseIdentityV2AdminTest):
         token = self.client.auth_provider.get_token()
         # Delete the token from database
         self.client.delete_token(token)
-        self.assertRaises(exceptions.Unauthorized, self.client.delete_user,
+        self.assertRaises(lib_exc.Unauthorized, self.client.delete_user,
                           self.alt_user)
 
         # Unset the token to allow further tests to generate a new token
@@ -159,7 +159,7 @@ class UsersNegativeTestJSON(base.BaseIdentityV2AdminTest):
         # Disabled user's token should not get authenticated
         self.data.setup_test_user()
         self.disable_user(self.data.test_user)
-        self.assertRaises(exceptions.Unauthorized, self.token_client.auth,
+        self.assertRaises(lib_exc.Unauthorized, self.token_client.auth,
                           self.data.test_user,
                           self.data.test_password,
                           self.data.test_tenant)
@@ -169,7 +169,7 @@ class UsersNegativeTestJSON(base.BaseIdentityV2AdminTest):
         # User's token for a disabled tenant should not be authenticated
         self.data.setup_test_user()
         self.disable_tenant(self.data.test_tenant)
-        self.assertRaises(exceptions.Unauthorized, self.token_client.auth,
+        self.assertRaises(lib_exc.Unauthorized, self.token_client.auth,
                           self.data.test_user,
                           self.data.test_password,
                           self.data.test_tenant)
@@ -178,7 +178,7 @@ class UsersNegativeTestJSON(base.BaseIdentityV2AdminTest):
     def test_authentication_with_invalid_tenant(self):
         # User's token for an invalid tenant should not be authenticated
         self.data.setup_test_user()
-        self.assertRaises(exceptions.Unauthorized, self.token_client.auth,
+        self.assertRaises(lib_exc.Unauthorized, self.token_client.auth,
                           self.data.test_user,
                           self.data.test_password,
                           'junktenant1234')
@@ -187,7 +187,7 @@ class UsersNegativeTestJSON(base.BaseIdentityV2AdminTest):
     def test_authentication_with_invalid_username(self):
         # Non-existent user's token should not get authenticated
         self.data.setup_test_user()
-        self.assertRaises(exceptions.Unauthorized, self.token_client.auth,
+        self.assertRaises(lib_exc.Unauthorized, self.token_client.auth,
                           'junkuser123', self.data.test_password,
                           self.data.test_tenant)
 
@@ -195,7 +195,7 @@ class UsersNegativeTestJSON(base.BaseIdentityV2AdminTest):
     def test_authentication_with_invalid_password(self):
         # User's token with invalid password should not be authenticated
         self.data.setup_test_user()
-        self.assertRaises(exceptions.Unauthorized, self.token_client.auth,
+        self.assertRaises(lib_exc.Unauthorized, self.token_client.auth,
                           self.data.test_user, 'junkpass1234',
                           self.data.test_tenant)
 
@@ -203,7 +203,7 @@ class UsersNegativeTestJSON(base.BaseIdentityV2AdminTest):
     def test_get_users_by_unauthorized_user(self):
         # Non-administrator user should not be authorized to get user list
         self.data.setup_test_user()
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.non_admin_client.get_users)
 
     @test.attr(type=['negative', 'gate'])
@@ -211,7 +211,7 @@ class UsersNegativeTestJSON(base.BaseIdentityV2AdminTest):
         # Request to get list of users without a valid token should fail
         token = self.client.auth_provider.get_token()
         self.client.delete_token(token)
-        self.assertRaises(exceptions.Unauthorized, self.client.get_users)
+        self.assertRaises(lib_exc.Unauthorized, self.client.get_users)
         self.client.auth_provider.clear_auth()
 
     @test.attr(type=['negative', 'gate'])
diff --git a/tempest/api/identity/admin/v3/test_projects_negative.py b/tempest/api/identity/admin/v3/test_projects_negative.py
index 8bb7d50cab..23a16d1eea 100644
--- a/tempest/api/identity/admin/v3/test_projects_negative.py
+++ b/tempest/api/identity/admin/v3/test_projects_negative.py
@@ -27,7 +27,7 @@ class ProjectsNegativeTestJSON(base.BaseIdentityV3AdminTest):
     @test.attr(type=['negative', 'gate'])
     def test_list_projects_by_unauthorized_user(self):
         # Non-admin user should not be able to list projects
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.non_admin_client.list_projects)
 
     @test.attr(type=['negative', 'gate'])
@@ -45,7 +45,7 @@ class ProjectsNegativeTestJSON(base.BaseIdentityV3AdminTest):
         # Non-admin user should not be authorized to create a project
         project_name = data_utils.rand_name('project-')
         self.assertRaises(
-            exceptions.Unauthorized, self.non_admin_client.create_project,
+            lib_exc.Unauthorized, self.non_admin_client.create_project,
             project_name)
 
     @test.attr(type=['negative', 'gate'])
@@ -68,7 +68,7 @@ class ProjectsNegativeTestJSON(base.BaseIdentityV3AdminTest):
         project = self.client.create_project(project_name)
         self.data.projects.append(project)
         self.assertRaises(
-            exceptions.Unauthorized, self.non_admin_client.delete_project,
+            lib_exc.Unauthorized, self.non_admin_client.delete_project,
             project['id'])
 
     @test.attr(type=['negative', 'gate'])
diff --git a/tempest/api/image/v2/test_images_member_negative.py b/tempest/api/image/v2/test_images_member_negative.py
index 1f8e3d0be0..9965286091 100644
--- a/tempest/api/image/v2/test_images_member_negative.py
+++ b/tempest/api/image/v2/test_images_member_negative.py
@@ -10,6 +10,8 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.image import base
 from tempest import exceptions
 from tempest import test
@@ -35,7 +37,7 @@ class ImagesMemberNegativeTest(base.BaseV2MemberImageTest):
                                                self.alt_tenant_id)
         self.assertEqual(member['status'], 'pending')
         self.assertNotIn(image_id, self._list_image_ids_as_alt())
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.os_img_client.update_member_status,
                           image_id, self.alt_tenant_id, 'accepted')
         self.assertNotIn(image_id, self._list_image_ids_as_alt())
diff --git a/tempest/api/object_storage/test_account_quotas_negative.py b/tempest/api/object_storage/test_account_quotas_negative.py
index 36e7111596..0e136bf430 100644
--- a/tempest/api/object_storage/test_account_quotas_negative.py
+++ b/tempest/api/object_storage/test_account_quotas_negative.py
@@ -21,7 +21,6 @@ from tempest.api.object_storage import base
 from tempest import clients
 from tempest.common.utils import data_utils
 from tempest import config
-from tempest import exceptions
 from tempest import test
 
 CONF = config.CONF
@@ -86,12 +85,12 @@ class AccountQuotasNegativeTest(base.BaseObjectTest):
         """
 
         # Not able to remove quota
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.account_client.create_account_metadata,
                           {"Quota-Bytes": ""})
 
         # Not able to modify quota
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.account_client.create_account_metadata,
                           {"Quota-Bytes": "100"})
 
diff --git a/tempest/api/object_storage/test_account_services_negative.py b/tempest/api/object_storage/test_account_services_negative.py
index ef04387798..9acf668cc2 100644
--- a/tempest/api/object_storage/test_account_services_negative.py
+++ b/tempest/api/object_storage/test_account_services_negative.py
@@ -14,9 +14,10 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.object_storage import base
 from tempest import clients
-from tempest import exceptions
 from tempest import test
 
 
@@ -44,6 +45,6 @@ class AccountNegativeTest(base.BaseObjectTest):
 
         params = {'format': 'json'}
         # list containers with non-authorized user token
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.account_client.list_account_containers,
                           params=params)
diff --git a/tempest/api/object_storage/test_container_acl_negative.py b/tempest/api/object_storage/test_container_acl_negative.py
index 138d25a30e..7fe472c9cd 100644
--- a/tempest/api/object_storage/test_container_acl_negative.py
+++ b/tempest/api/object_storage/test_container_acl_negative.py
@@ -14,10 +14,11 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.object_storage import base
 from tempest import clients
 from tempest.common.utils import data_utils
-from tempest import exceptions
 from tempest import test
 
 
@@ -47,7 +48,7 @@ class ObjectACLsNegativeTest(base.BaseObjectTest):
             request_part='headers',
             auth_data=None
         )
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.object_client.create_object,
                           self.container_name, object_name, 'data', headers={})
 
@@ -63,7 +64,7 @@ class ObjectACLsNegativeTest(base.BaseObjectTest):
             request_part='headers',
             auth_data=None
         )
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.object_client.delete_object,
                           self.container_name, object_name)
 
@@ -77,7 +78,7 @@ class ObjectACLsNegativeTest(base.BaseObjectTest):
             request_part='headers',
             auth_data=self.test_auth_data
         )
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.object_client.create_object,
                           self.container_name, object_name, 'data', headers={})
 
@@ -94,7 +95,7 @@ class ObjectACLsNegativeTest(base.BaseObjectTest):
             request_part='headers',
             auth_data=self.test_auth_data
         )
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.object_client.get_object,
                           self.container_name, object_name)
 
@@ -111,7 +112,7 @@ class ObjectACLsNegativeTest(base.BaseObjectTest):
             request_part='headers',
             auth_data=self.test_auth_data
         )
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.object_client.delete_object,
                           self.container_name, object_name)
 
@@ -134,7 +135,7 @@ class ObjectACLsNegativeTest(base.BaseObjectTest):
             request_part='headers',
             auth_data=self.test_auth_data
         )
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.object_client.get_object,
                           self.container_name, object_name)
 
@@ -153,7 +154,7 @@ class ObjectACLsNegativeTest(base.BaseObjectTest):
             auth_data=self.test_auth_data
         )
         object_name = data_utils.rand_name(name='Object')
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.object_client.create_object,
                           self.container_name,
                           object_name, 'data', headers={})
@@ -175,7 +176,7 @@ class ObjectACLsNegativeTest(base.BaseObjectTest):
             auth_data=self.test_auth_data
         )
         object_name = data_utils.rand_name(name='Object')
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.object_client.create_object,
                           self.container_name,
                           object_name, 'data', headers={})
@@ -201,7 +202,7 @@ class ObjectACLsNegativeTest(base.BaseObjectTest):
             request_part='headers',
             auth_data=self.test_auth_data
         )
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.object_client.delete_object,
                           self.container_name,
                           object_name)
diff --git a/tempest/api/object_storage/test_object_formpost_negative.py b/tempest/api/object_storage/test_object_formpost_negative.py
index 32f5917713..cdd9d2cc55 100644
--- a/tempest/api/object_storage/test_object_formpost_negative.py
+++ b/tempest/api/object_storage/test_object_formpost_negative.py
@@ -18,9 +18,10 @@ import hmac
 import time
 import urlparse
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.object_storage import base
 from tempest.common.utils import data_utils
-from tempest import exceptions
 from tempest import test
 
 
@@ -117,7 +118,7 @@ class ObjectFormPostNegativeTest(base.BaseObjectTest):
 
         url = "%s/%s" % (self.container_name, self.object_name)
         exc = self.assertRaises(
-            exceptions.Unauthorized,
+            lib_exc.Unauthorized,
             self.object_client.post,
             url, body, headers=headers)
         self.assertIn('FormPost: Form Expired', str(exc))
@@ -133,7 +134,7 @@ class ObjectFormPostNegativeTest(base.BaseObjectTest):
 
         url = "%s/%s" % (self.container_name, self.object_name)
         exc = self.assertRaises(
-            exceptions.Unauthorized,
+            lib_exc.Unauthorized,
             self.object_client.post,
             url, body, headers=headers)
         self.assertIn('FormPost: Invalid Signature', str(exc))
diff --git a/tempest/api/object_storage/test_object_temp_url_negative.py b/tempest/api/object_storage/test_object_temp_url_negative.py
index b752348b59..ca342933c0 100644
--- a/tempest/api/object_storage/test_object_temp_url_negative.py
+++ b/tempest/api/object_storage/test_object_temp_url_negative.py
@@ -19,9 +19,10 @@ import hmac
 import time
 import urlparse
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.object_storage import base
 from tempest.common.utils import data_utils
-from tempest import exceptions
 from tempest import test
 
 
@@ -104,5 +105,5 @@ class ObjectTempUrlNegativeTest(base.BaseObjectTest):
         # temp URL is valid for 1 seconds, let's wait 2
         time.sleep(2)
 
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.object_client.get, url)
diff --git a/tempest/common/service_client.py b/tempest/common/service_client.py
index e43ced4b68..9aeb243199 100644
--- a/tempest/common/service_client.py
+++ b/tempest/common/service_client.py
@@ -59,8 +59,6 @@ class ServiceClient(rest_client.RestClient):
                 method, url,
                 extra_headers=extra_headers,
                 headers=headers, body=body)
-        except lib_exceptions.Unauthorized as ex:
-            raise exceptions.Unauthorized(ex)
         except lib_exceptions.BadRequest as ex:
             raise exceptions.BadRequest(ex)
         # TODO(oomichi): This is just a workaround for failing gate tests
@@ -68,7 +66,7 @@ class ServiceClient(rest_client.RestClient):
         # We will need to remove this translation and replace negative tests
         # with lib_exceptions.Forbidden in the future.
         except lib_exceptions.Forbidden as ex:
-            raise exceptions.Unauthorized(ex)
+            raise lib_exceptions.Unauthorized(ex)
 
 
 class ResponseBody(dict):
diff --git a/tempest/exceptions.py b/tempest/exceptions.py
index 333246c65d..81db5d9c85 100644
--- a/tempest/exceptions.py
+++ b/tempest/exceptions.py
@@ -151,10 +151,6 @@ class InvalidHttpSuccessCode(RestClientException):
     message = "The success code is different than the expected one"
 
 
-class Unauthorized(RestClientException):
-    message = 'Unauthorized'
-
-
 class BadRequest(RestClientException):
     message = "Bad request"
 
diff --git a/tempest/services/identity/json/token_client.py b/tempest/services/identity/json/token_client.py
index 93936bcf3d..1e8b31e85a 100644
--- a/tempest/services/identity/json/token_client.py
+++ b/tempest/services/identity/json/token_client.py
@@ -13,6 +13,7 @@
 #    under the License.
 
 import json
+from tempest_lib import exceptions as lib_exc
 
 from tempest.common import service_client
 from tempest import config
@@ -87,7 +88,7 @@ class TokenClientJSON(service_client.ServiceClient):
 
         if resp.status in [401, 403]:
             resp_body = json.loads(resp_body)
-            raise exceptions.Unauthorized(resp_body['error']['message'])
+            raise lib_exc.Unauthorized(resp_body['error']['message'])
         elif resp.status not in [200, 201]:
             raise exceptions.IdentityError(
                 'Unexpected status code {0}'.format(resp.status))
diff --git a/tempest/services/identity/v3/json/token_client.py b/tempest/services/identity/v3/json/token_client.py
index 14c4a0a5e7..1467d7ca87 100644
--- a/tempest/services/identity/v3/json/token_client.py
+++ b/tempest/services/identity/v3/json/token_client.py
@@ -13,6 +13,7 @@
 #    under the License.
 
 import json
+from tempest_lib import exceptions as lib_exc
 
 from tempest.common import service_client
 from tempest import config
@@ -112,7 +113,7 @@ class V3TokenClientJSON(service_client.ServiceClient):
 
         if resp.status in [401, 403]:
             resp_body = json.loads(resp_body)
-            raise exceptions.Unauthorized(resp_body['error']['message'])
+            raise lib_exc.Unauthorized(resp_body['error']['message'])
         elif resp.status not in [200, 201, 204]:
             raise exceptions.IdentityError(
                 'Unexpected status code {0}'.format(resp.status))