diff --git a/openstack_dashboard/dashboards/project/instances/forms.py b/openstack_dashboard/dashboards/project/instances/forms.py
index 9e9e244a98..5c8fe1ead7 100644
--- a/openstack_dashboard/dashboards/project/instances/forms.py
+++ b/openstack_dashboard/dashboards/project/instances/forms.py
@@ -194,15 +194,18 @@ class AttachVolume(forms.SelfHandlingForm):
                                          "select a device name."))
     instance_id = forms.CharField(widget=forms.HiddenInput())
 
-    def __init__(self, *args, **kwargs):
-        super(AttachVolume, self).__init__(*args, **kwargs)
+    def __init__(self, request, *args, **kwargs):
+        super(AttachVolume, self).__init__(request, *args, **kwargs)
 
         # Populate volume choices
         volume_list = kwargs.get('initial', {}).get("volume_list", [])
         volumes = []
         for volume in volume_list:
             # Only show volumes that aren't attached to an instance already
-            if not volume.attachments:
+            # Or those with multiattach enabled
+            if (not volume.attachments or
+                    (getattr(volume, 'multiattach', False)) and
+                    api.nova.get_microversion(request, 'multiattach')):
                 volumes.append(
                     (volume.id, '%(name)s (%(id)s)'
                      % {"name": volume.name, "id": volume.id}))
@@ -239,7 +242,7 @@ class AttachVolume(forms.SelfHandlingForm):
                 msg = six.text_type(ex)
             else:
                 # Use a generic error message.
-                msg = _('Unable to attach volume.')
+                msg = _('Unable to attach volume: %s') % ex
             exceptions.handle(request, msg, redirect=redirect)
         return True
 
diff --git a/openstack_dashboard/dashboards/project/instances/tests.py b/openstack_dashboard/dashboards/project/instances/tests.py
index 824acf6cbb..ecc2b45f72 100644
--- a/openstack_dashboard/dashboards/project/instances/tests.py
+++ b/openstack_dashboard/dashboards/project/instances/tests.py
@@ -30,6 +30,7 @@ from django.test.utils import override_settings
 from django.urls import reverse
 from django.utils.http import urlencode
 import mock
+from novaclient import api_versions
 import six
 
 from horizon import exceptions
@@ -5665,6 +5666,58 @@ class ConsoleManagerTests(helpers.ResetImageAPIVersionMixin, helpers.TestCase):
         # the test helpers don't seem to handle this case.
         mock_client.assert_not_called()
 
+    @helpers.create_mocks({
+        api.cinder: ('volume_list',
+                     'volume_get',),
+        api.nova: ('get_microversion',),
+        api._nova: ('novaclient',),
+    })
+    def test_multiattach_volume_attach_to_multple_server(self):
+        # Tests that a multiattach volume must be attached with compute API
+        # microversion 2.60 and the feature is not available.
+        server1 = self.servers.list()[0]
+        server2 = self.servers.list()[1]
+        volumes = self.cinder_volumes.list()
+        volume = volumes[1]
+        volume.multiattach = True
+        self.mock_volume_list.return_value = volumes
+        self.mock_volume_get.return_value = volume
+        self.mock_get_microversion.return_value = api_versions.APIVersion(
+            '2.60')
+
+        form_data = {"volume": volume.id,
+                     "instance_id": server1.id,
+                     "device": None}
+
+        url = reverse('horizon:project:instances:attach_volume',
+                      args=[server1.id])
+
+        s1 = self.client.post(url, form_data)
+        self.assertNoFormErrors(s1)
+
+        form_data = {"volume": volume.id,
+                     "instance_id": server2.id,
+                     "device": None}
+
+        url = reverse('horizon:project:instances:attach_volume',
+                      args=[server2.id])
+
+        s2 = self.client.post(url, form_data)
+        self.assertNoFormErrors(s2)
+        self.mock_volume_list.assert_has_calls([
+            mock.call(helpers.IsHttpRequest()),
+            mock.call(helpers.IsHttpRequest())])
+        self.assertEqual(self.mock_volume_list.call_count, 2)
+        self.mock_volume_get.assert_has_calls([
+            mock.call(helpers.IsHttpRequest(), volume.id)
+        ])
+        self.assertEqual(self.mock_volume_get.call_count, 2)
+        self.mock_get_microversion.assert_has_calls([
+            mock.call(helpers.IsHttpRequest(), 'multiattach')
+
+        ])
+        self.assertEqual(self.mock_get_microversion.call_count, 2)
+
     @helpers.create_mocks({api.nova: ('instance_volumes_list',)})
     def test_volume_detach_get(self):
         server = self.servers.first()
diff --git a/releasenotes/notes/multi-attached-volume-support-3d32cde6f296cdd9.yaml b/releasenotes/notes/multi-attached-volume-support-3d32cde6f296cdd9.yaml
new file mode 100644
index 0000000000..21fd9a4a25
--- /dev/null
+++ b/releasenotes/notes/multi-attached-volume-support-3d32cde6f296cdd9.yaml
@@ -0,0 +1,15 @@
+---
+features:
+  - |
+    [:blueprint:`multi-Attached-volume-support`]
+    Horizon now support Multi-Attached volume.
+    User is now able to attach a volume to multiple
+    instances. The ability to attach a volume to
+    multiple host/servers requires that the volume
+    type includes an extra-spec capability setting of
+    multiattach=<is> True. Horizon automatically detects
+    and enable multi-attach-volume feature.
+
+    API restrictions:
+      Multiattach capable volumes can only be attached
+      with nova API microversion 2.60 or later.