diff --git a/azure-pipelines.yml b/azure-pipelines.yml
index 3ea1cd008a4..ba829bb1291 100644
--- a/azure-pipelines.yml
+++ b/azure-pipelines.yml
@@ -249,6 +249,7 @@ stages:
           PYTHONUNBUFFERED: 1
           PYTHONIOENCODING: 'utf-8'
           AZURE_CI_WINDOWS: 'true'
+          MNE_3D_OPTION_ANTIALIAS: 'false'
           PYTHON_ARCH: 'x64'
         timeoutInMinutes: 70
         strategy:
diff --git a/mne/viz/backends/_pyvista.py b/mne/viz/backends/_pyvista.py
index b622f7cce59..dbf04335598 100644
--- a/mne/viz/backends/_pyvista.py
+++ b/mne/viz/backends/_pyvista.py
@@ -13,7 +13,6 @@
 
 from contextlib import contextmanager
 from inspect import signature
-import os
 import re
 import sys
 import warnings
@@ -879,11 +878,9 @@ def _toggle_antialias(self):
         # For Mayavi we have an "on activated" event or so, we should look into
         # using this for Azure at some point, too.
         if self.figure._is_active():
-            # Azure
-            bad_system = os.getenv("AZURE_CI_WINDOWS", "false").lower() == "true"
             # MESA can't seem to handle MSAA and depth peeling simultaneously, see
             # https://github.com/pyvista/pyvista/issues/4867
-            bad_system |= _is_mesa(self.plotter)
+            bad_system = _is_mesa(self.plotter)
             for plotter in self._all_plotters:
                 if bad_system or not self.antialias:
                     plotter.disable_anti_aliasing()