--- a/mozilla-tests/config.py
+++ b/mozilla-tests/config.py
@@ -1627,16 +1627,19 @@ PLATFORM_UNITTEST_VARS = {
                     'config_files': ["unittests/win_unittest.py"],
                 },
                 'gtest': {
                     'config_files': ["unittests/win_unittest.py"],
                 },
                 'marionette': {
                     'config_files': ["marionette/windows_config.py"],
                 },
+                'marionette-e10s': {
+                    'config_files': ["marionette/windows_config.py"],
+                },
                 'media-tests': {
                     'config_files': ["mediatests/buildbot_windows_config.py"],
                 },
                 'media-youtube-tests': {
                     'config_files': ["mediatests/buildbot_windows_config.py"],
                 },
                 'jittest': {
                     'config_files': ["unittests/win_unittest.py"],
@@ -1747,16 +1750,19 @@ PLATFORM_UNITTEST_VARS = {
                     'config_files': ["unittests/win_unittest.py"],
                 },
                 'gtest': {
                     'config_files': ["unittests/win_unittest.py"],
                 },
                 'marionette': {
                     'config_files': ["marionette/windows_config.py"],
                 },
+                'marionette-e10s': {
+                    'config_files': ["marionette/windows_config.py"],
+                },
                 'media-tests': {
                     'config_files': ["mediatests/buildbot_windows_config.py"],
                 },
                 'media-youtube-tests': {
                     'config_files': ["mediatests/buildbot_windows_config.py"],
                 },
                 'jittest': {
                     'config_files': ["unittests/win_unittest.py"],
@@ -1867,16 +1873,19 @@ PLATFORM_UNITTEST_VARS = {
                     'config_files': ["unittests/win_unittest.py"],
                 },
                 'gtest': {
                     'config_files': ["unittests/win_unittest.py"],
                 },
                 'marionette': {
                     'config_files': ["marionette/windows_config.py"],
                 },
+                'marionette-e10s': {
+                    'config_files': ["marionette/windows_config.py"],
+                },
                 'media-tests': {
                     'config_files': ["mediatests/buildbot_windows_config.py"],
                 },
                 'media-youtube-tests': {
                     'config_files': ["mediatests/buildbot_windows_config.py"],
                 },
                 'jittest': {
                     'config_files': ["unittests/win_unittest.py"],
@@ -1992,16 +2001,19 @@ PLATFORM_UNITTEST_VARS = {
                     'config_files': ["unittests/win_unittest.py"],
                 },
                 'gtest': {
                     'config_files': ["unittests/win_unittest.py"],
                 },
                 'marionette': {
                     'config_files': ["marionette/windows_config.py"],
                 },
+                'marionette-e10s': {
+                    'config_files': ["marionette/windows_config.py"],
+                },
                 'media-tests': {
                     'config_files': ["mediatests/buildbot_windows_config.py"],
                 },
                 'media-youtube-tests': {
                     'config_files': ["mediatests/buildbot_windows_config.py"],
                 },
                 'jittest': {
                     'config_files': ["unittests/win_unittest.py"],
@@ -2100,16 +2112,19 @@ PLATFORM_UNITTEST_VARS = {
                     'config_files': ["unittests/win_unittest.py"],
                 },
                 'gtest': {
                     'config_files': ["unittests/win_unittest.py"],
                 },
                 'marionette': {
                     'config_files': ["marionette/windows_config.py"],
                 },
+                'marionette-e10s': {
+                    'config_files': ["marionette/windows_config.py"],
+                },
                 'media-tests': {
                     'config_files': ["mediatests/buildbot_windows_config.py"],
                 },
                 'media-youtube-tests': {
                     'config_files': ["mediatests/buildbot_windows_config.py"],
                 },
                 'jittest': {
                     'config_files': ["unittests/win_unittest.py"],