--- a/testing/mozharness/configs/talos/windows_config.py
+++ b/testing/mozharness/configs/talos/windows_config.py
@@ -11,17 +11,17 @@ config = {
     "installer_path": "installer.exe",
     "virtualenv_path": VENV_PATH,
     "virtualenv_python_dll": PYTHON_DLL,
     "pip_index": False,
     "find_links": [
         "http://pypi.pvt.build.mozilla.org/pub",
         "http://pypi.pub.build.mozilla.org/pub",
     ],
-    "virtualenv_modules": ['pywin32', 'talos', 'mozinstall'],
+    "virtualenv_modules": ['talos', 'mozinstall'],
     "exes": {
         'python': PYTHON,
         'virtualenv': [PYTHON, 'c:/mozilla-build/buildbotve/virtualenv.py'],
         'easy_install': ['%s/scripts/python' % VENV_PATH,
                          '%s/scripts/easy_install-2.7-script.py' % VENV_PATH],
         'mozinstall': ['%s/scripts/python' % VENV_PATH,
                        '%s/scripts/mozinstall-script.py' % VENV_PATH],
         'hg': 'c:/mozilla-build/hg/hg',

--- a/testing/mozharness/configs/unittests/win_unittest.py
+++ b/testing/mozharness/configs/unittests/win_unittest.py
@@ -21,17 +21,16 @@ config = {
         'tooltool.py': [sys.executable, 'C:/mozilla-build/tooltool.py'],
     },
     ###
     "installer_path": INSTALLER_PATH,
     "binary_path": BINARY_PATH,
     "xpcshell_name": XPCSHELL_NAME,
     "virtualenv_path": 'venv',
     "virtualenv_python_dll": os.path.join(os.path.dirname(sys.executable), "python27.dll"),
-    "virtualenv_modules": ['pywin32'],
 
     "find_links": [
         "http://pypi.pvt.build.mozilla.org/pub",
         "http://pypi.pub.build.mozilla.org/pub",
     ],
     "pip_index": False,
     "exe_suffix": EXE_SUFFIX,
     "run_file_names": {

--- a/testing/mozharness/mozharness/base/python.py
+++ b/testing/mozharness/mozharness/base/python.py
@@ -456,18 +456,16 @@ class VirtualenvMixin(object):
                     self.fatal("Can't install module without module name: %s" %
                                str(module))
                 module_url = module.get('url', None)
                 global_options = module.get('global_options', [])
             else:
                 module_url = self.config.get('%s_url' % module, module_url)
                 module_name = module
             install_method = 'pip'
-            if module_name in ('pywin32',):
-                install_method = 'easy_install'
             self.install_module(module=module_name,
                                 module_url=module_url,
                                 install_method=install_method,
                                 requirements=requirements,
                                 global_options=global_options)
 
         for module, url, method, requirements, optional, two_pass, editable in \
                 self._virtualenv_modules: