diff --git a/nova/monkey_patch.py b/nova/monkey_patch.py
index 6bcd9017a9..ee5e2b101b 100644
--- a/nova/monkey_patch.py
+++ b/nova/monkey_patch.py
@@ -44,10 +44,6 @@ def _monkey_patch():
     if debugger.enabled():
         # turn off thread patching to enable the remote debugger
         eventlet.monkey_patch(thread=False)
-    elif os.name == 'nt':
-        # for nova-compute running on Windows(Hyper-v)
-        # pipes don't support non-blocking I/O
-        eventlet.monkey_patch(os=False)
     else:
         eventlet.monkey_patch()
 
diff --git a/nova/tests/fixtures/nova.py b/nova/tests/fixtures/nova.py
index 6f1845e8af..33d7f289f2 100644
--- a/nova/tests/fixtures/nova.py
+++ b/nova/tests/fixtures/nova.py
@@ -1088,13 +1088,7 @@ class PoisonFunctions(fixtures.Fixture):
     def setUp(self):
         super(PoisonFunctions, self).setUp()
 
-        try:
-            self._poison_libvirt_driver()
-        except ImportError:
-            # The libvirt driver uses modules that are not available
-            # on Windows.
-            if os.name != 'nt':
-                raise
+        self._poison_libvirt_driver()
 
     def _poison_libvirt_driver(self):
         # The nova libvirt driver starts an event thread which only
diff --git a/nova/tests/unit/virt/disk/test_inject.py b/nova/tests/unit/virt/disk/test_inject.py
index e5e612e44c..ec268d0f16 100644
--- a/nova/tests/unit/virt/disk/test_inject.py
+++ b/nova/tests/unit/virt/disk/test_inject.py
@@ -13,11 +13,9 @@
 #    under the License.
 
 from collections import OrderedDict
-import os
 
 import fixtures
 
-from nova import exception
 from nova import test
 from nova.tests.unit.virt.disk.vfs import fakeguestfs
 from nova.virt.disk import api as diskapi
@@ -47,19 +45,6 @@ class VirtDiskTest(test.NoDBTestCase):
             key="mysshkey",
             mandatory=('key',)))
 
-        os_name = os.name
-        os.name = 'nt'  # Cause password injection to fail
-        self.assertRaises(exception.NovaException,
-                          diskapi.inject_data,
-                          imgmodel.LocalFileImage("/some/file",
-                                                  imgmodel.FORMAT_RAW),
-                          admin_password="p",
-                          mandatory=('admin_password',))
-        self.assertFalse(diskapi.inject_data(
-            imgmodel.LocalFileImage("/some/file", imgmodel.FORMAT_RAW),
-            admin_password="p"))
-        os.name = os_name
-
         self.assertFalse(diskapi.inject_data(
             imgmodel.LocalFileImage("/some/fail/file", imgmodel.FORMAT_RAW),
             key="mysshkey"))
diff --git a/nova/virt/disk/api.py b/nova/virt/disk/api.py
index 9902c0608b..057dcb6a45 100644
--- a/nova/virt/disk/api.py
+++ b/nova/virt/disk/api.py
@@ -23,6 +23,7 @@ Includes injection of SSH PGP keys into authorized_keys file.
 
 """
 
+import crypt
 import os
 import random
 import tempfile
@@ -41,9 +42,6 @@ from nova.virt.disk.vfs import api as vfs
 from nova.virt.image import model as imgmodel
 from nova.virt import images
 
-if os.name != 'nt':
-    import crypt
-
 
 LOG = logging.getLogger(__name__)
 
@@ -621,9 +619,6 @@ def _set_passwd(username, admin_passwd, passwd_data, shadow_data):
     :raises: exception.NovaException(), IOError()
 
     """
-    if os.name == 'nt':
-        raise exception.NovaException(_('Not implemented on Windows'))
-
     # encryption algo - id pairs for crypt()
     algos = {'SHA-512': '$6$', 'SHA-256': '$5$', 'MD5': '$1$', 'DES': ''}