diff --git a/azure-pipelines.yml b/azure-pipelines.yml
index aa91291..7d98a8e 100644
--- a/azure-pipelines.yml
+++ b/azure-pipelines.yml
@@ -1,19 +1,57 @@
-# Starter pipeline
-# Start with a minimal pipeline that you can customize to build and deploy your code.
-# Add steps that build, run tests, deploy, and more:
-# https://aka.ms/yaml
-
 trigger:
-- master
-
-pool:
-  vmImage: 'ubuntu-latest'
-
-steps:
-- script: echo Hello, world!
-  displayName: 'Run a one-line script'
+  # start a new build for every push
+  batch: False
+  branches:
+    include:
+      - master
 
-- script: |
-    echo Add other tasks to build, test, and deploy your project.
-    echo See https://aka.ms/yaml
-  displayName: 'Run a multi-line script'
+jobs:
+- job: Windows
+  variables:
+    PIP_CACHE_FOLDER: $(Pipeline.Workspace)/.cache/pip
+  pool:
+    vmIMage: 'VS2017-Win2016'
+  strategy:
+    maxParallel: 4
+    matrix:
+      Python37-64bit:
+        PYTHON_VERSION: '3.7'
+        PYTHON_ARCH: 'x64'
+  steps:
+  - task: UsePythonVersion@0
+    inputs:
+      versionSpec: $(PYTHON_VERSION)
+      architecture: $(PYTHON_ARCH)
+      addToPath: true
+  - task: Cache@2
+    inputs:
+      key: 'pip'
+      path: $(PIP_CACHE_FOLDER)
+    displayName: Cache pip packages
+  - powershell: |
+     pip install numpy scipy matplotlib nose pillow pytest pytest-cov pytest-faulthandler coverage imageio imageio-ffmpeg codecov pyqt5==5.9 --cache-dir $(PIP_CACHE_FOLDER)
+     pip install traits traitsui pyface vtk mayavi nibabel --cache-dir $(PIP_CACHE_FOLDER)
+    displayName: 'Install pip dependencies'
+  - powershell: |
+     powershell make/get_fsaverage.ps1
+     $env:SUBJECTS_DIR = '$(System.DefaultWorkingDirectory)' + '\subjects'
+     Write-Host ("##vso[task.setvariable variable=SUBJECTS_DIR]" + $env:SUBJECTS_DIR)
+    displayName: 'Get fsaverage'
+  - powershell: |
+     git clone --depth 1 git://github.com/pyvista/gl-ci-helpers.git
+     powershell gl-ci-helpers/appveyor/install_opengl.ps1
+    displayName: 'Get OpenGL'
+  - script: python setup.py develop
+    displayName: 'Install'
+  - script: pytest surfer --cov=surfer -v
+    displayName: 'Run tests'
+  - script: codecov --root %BUILD_REPOSITORY_LOCALPATH% -t %CODECOV_TOKEN%
+    displayName: 'Codecov'
+    env:
+      CODECOV_TOKEN: $(CODECOV_TOKEN)
+    condition: always()
+  - task: PublishTestResults@2
+    inputs:
+      testResultsFiles: 'junit-*.xml'
+      testRunTitle: 'Publish test results for Python $(python.version)'
+    condition: always()
diff --git a/surfer/tests/test_viz.py b/surfer/tests/test_viz.py
index 206d1f2..ac96fe2 100644
--- a/surfer/tests/test_viz.py
+++ b/surfer/tests/test_viz.py
@@ -1,3 +1,4 @@
+import gc
 import os
 import os.path as op
 from os.path import join as pjoin
@@ -210,6 +211,17 @@ def test_data():
     brain.close()
 
 
+@requires_fsaverage()
+def test_close():
+    """Test that close and del actually work."""
+    _set_backend()
+    brain = Brain('fsaverage', 'both', 'inflated')
+    brain.close()
+    brain.__del__()
+    del brain
+    gc.collect()
+
+
 @requires_fsaverage()
 def test_data_limits():
     """Test handling of data limits."""
diff --git a/surfer/viz.py b/surfer/viz.py
index df6763b..b6579c9 100644
--- a/surfer/viz.py
+++ b/surfer/viz.py
@@ -2296,7 +2296,10 @@ def hide_colorbar(self, row=-1, col=-1):
 
     def close(self):
         """Close all figures and cleanup data structure."""
-        for ri, ff in enumerate(self._figures):
+        self._close()
+
+    def _close(self, force_render=True):
+        for ri, ff in enumerate(getattr(self, '_figures', [])):
             for ci, f in enumerate(ff):
                 if f is not None:
                     try:
@@ -2305,7 +2308,8 @@ def close(self):
                         pass
                     self._figures[ri][ci] = None
 
-        _force_render([])
+        if force_render:
+            _force_render([])
 
         # should we tear down other variables?
         if getattr(self, '_v', None) is not None:
@@ -2316,7 +2320,8 @@ def close(self):
             self._v = None
 
     def __del__(self):
-        self.close()
+        # Forcing the GUI updates during GC seems to be problematic
+        self._close(force_render=False)
 
     ###########################################################################
     # SAVING OUTPUT