diff --git a/appveyor.yml b/appveyor.yml
index 4a4f970a..de2fa7c9 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -48,7 +48,7 @@ install:
 
 test_script:
 # uncomment to allow remote login to windows ci vm via rdp
-# - ps: $blockRdp = $true; iex ((new-object net.webclient).DownloadString('https://raw.githubusercontent.com/appveyor/ci/master/scripts/enable-rdp.ps1'))
+- ps: $blockRdp = $true; iex ((new-object net.webclient).DownloadString('https://raw.githubusercontent.com/appveyor/ci/master/scripts/enable-rdp.ps1'))
 
 # lint the python code
 # - python -m flake8 jupyterfs setup.py
diff --git a/jupyterfs/tests/test_pyfilesystem_manager.py b/jupyterfs/tests/test_pyfilesystem_manager.py
index 838ac19e..72712933 100644
--- a/jupyterfs/tests/test_pyfilesystem_manager.py
+++ b/jupyterfs/tests/test_pyfilesystem_manager.py
@@ -25,8 +25,9 @@
 test_hostname_smb_docker_share = 'TESTNET'
 test_name_port_smb_docker_share = 3669
 
+test_direct_tcp_smb_os_share = True
 test_host_smb_os_share = socket.gethostbyname_ex(socket.gethostname())[2][-1]
-test_smb_port_smb_os_share = 139
+test_smb_port_smb_os_share = 445
 
 _test_file_model = {
     'content': test_content,
@@ -209,6 +210,7 @@ def teardown_method(self, method):
 
     def _createContentsManager(self):
         kwargs = dict(
+            direct_tcp=test_direct_tcp_smb_os_share,
             host=test_host_smb_os_share,
             hostname=socket.getfqdn(),
             passwd=samba.smb_passwd,
@@ -217,11 +219,11 @@ def _createContentsManager(self):
         )
 
         if test_smb_port_smb_os_share is not None:
-            uri = 'smb://{username}:{passwd}@{host}:{port}/{share}?hostname={hostname}'.format(port=test_smb_port_smb_os_share, **kwargs)
-            cm = PyFilesystemContentsManager.open_fs(uri)
+            uri = 'smb://{username}:{passwd}@{host}:{port}/{share}?hostname={hostname}&direct-tcp={direct_tcp}'.format(port=test_smb_port_smb_os_share, **kwargs)
         else:
-            uri = 'smb://{username}:{passwd}@{host}/{share}?hostname={hostname}'.format(**kwargs)
-            cm = PyFilesystemContentsManager.open_fs(uri)
+            uri = 'smb://{username}:{passwd}@{host}/{share}?hostname={hostname}&direct-tcp={direct_tcp}'.format(**kwargs)
+
+        cm = PyFilesystemContentsManager.open_fs(uri)
 
         assert cm.dir_exists('.')
         return cm
diff --git a/jupyterfs/tests/utils/samba.py b/jupyterfs/tests/utils/samba.py
index 19bb3924..8272124f 100755
--- a/jupyterfs/tests/utils/samba.py
+++ b/jupyterfs/tests/utils/samba.py
@@ -84,6 +84,7 @@ class RootDirUtil:
     def __init__(
         self,
         dir_name,
+        direct_tcp=False,
         host=None,
         hostname=None,
         my_name='local',
@@ -94,6 +95,7 @@ def __init__(
         self.hostname = socket.getfqdn() if hostname is None else hostname
 
         self.dir_name = dir_name
+        self.direct_tcp = direct_tcp
         self.my_name = my_name
         self.name_port = name_port
         self.smb_port = smb_port
@@ -133,6 +135,7 @@ def resource(self):
             password=smb_passwd,
             my_name=self.my_name,
             remote_name=self.hostname,
+            is_direct_tcp=self.direct_tcp,
         )
 
         conn = SMBConnection(**kwargs)