diff --git a/README.md b/README.md
index 3bf8ce98d8..5c6f30978f 100644
--- a/README.md
+++ b/README.md
@@ -2238,7 +2238,7 @@ usage: -m [-h] [--tunnel-hostname TUNNEL_HOSTNAME] [--tunnel-port TUNNEL_PORT]
           [--filtered-url-regex-config FILTERED_URL_REGEX_CONFIG]
           [--cloudflare-dns-mode CLOUDFLARE_DNS_MODE]
 
-proxy.py v2.4.0rc7.dev12+gd234339.d20220116
+proxy.py v2.4.0rc7.dev15+gc4ea34e
 
 options:
   -h, --help            show this help message and exit
@@ -2279,13 +2279,13 @@ options:
                         Default: None. Unix socket path to use. When provided
                         --host and --port flags are ignored
   --local-executor LOCAL_EXECUTOR
-                        Default: 1. Enabled by default. Use 0 to disable. When
-                        enabled acceptors will make use of local (same
-                        process) executor instead of distributing load across
-                        remote (other process) executors. Enable this option
-                        to achieve CPU affinity between acceptors and
-                        executors, instead of using underlying OS kernel
-                        scheduling algorithm.
+                        Default: 1. Enabled by default (except on Windows).
+                        Use 0 to disable. When enabled acceptors will make use
+                        of local (same process) executor instead of
+                        distributing load across remote (other process)
+                        executors. Enable this option to achieve CPU affinity
+                        between acceptors and executors, instead of using
+                        underlying OS kernel scheduling algorithm.
   --num-acceptors NUM_ACCEPTORS
                         Defaults to number of CPU cores.
   --version, -v         Prints proxy.py version.
diff --git a/proxy/common/constants.py b/proxy/common/constants.py
index 37ef452f54..a828ab0cf4 100644
--- a/proxy/common/constants.py
+++ b/proxy/common/constants.py
@@ -122,7 +122,7 @@ def _env_threadless_compliant() -> bool:
 DEFAULT_STATIC_SERVER_DIR = os.path.join(PROXY_PY_DIR, "public")
 DEFAULT_MIN_COMPRESSION_LIMIT = 20  # In bytes
 DEFAULT_THREADLESS = _env_threadless_compliant()
-DEFAULT_LOCAL_EXECUTOR = True
+DEFAULT_LOCAL_EXECUTOR = not IS_WINDOWS
 DEFAULT_TIMEOUT = 10.0
 DEFAULT_VERSION = False
 DEFAULT_HTTP_PORT = 80
diff --git a/proxy/core/acceptor/acceptor.py b/proxy/core/acceptor/acceptor.py
index d83c5e00ae..af6ef73478 100644
--- a/proxy/core/acceptor/acceptor.py
+++ b/proxy/core/acceptor/acceptor.py
@@ -42,7 +42,7 @@
     type=int,
     default=int(DEFAULT_LOCAL_EXECUTOR),
     help='Default: ' + ('1' if DEFAULT_LOCAL_EXECUTOR else '0') + '.  ' +
-    'Enabled by default.  Use 0 to disable.  When enabled acceptors ' +
+    'Enabled by default (except on Windows).  Use 0 to disable.  When enabled acceptors ' +
     'will make use of local (same process) executor instead of distributing load across ' +
     'remote (other process) executors.  Enable this option to achieve CPU affinity between ' +
     'acceptors and executors, instead of using underlying OS kernel scheduling algorithm.',
diff --git a/tests/integration/test_integration.py b/tests/integration/test_integration.py
index 6acee8ee71..6a76ad29ed 100644
--- a/tests/integration/test_integration.py
+++ b/tests/integration/test_integration.py
@@ -37,52 +37,76 @@ def _tls_interception_flags(ca_cert_suffix: str = '') -> str:
     ))
 
 
-PROXY_PY_FLAGS_INTEGRATION = (
-    ('--threadless'),
+_PROXY_PY_FLAGS_INTEGRATION = [
     ('--threadless --local-executor 0'),
-    ('--threaded'),
-)
-
-PROXY_PY_HTTPS = (
-    ('--threadless ' + _https_server_flags()),
+]
+if not IS_WINDOWS:
+    _PROXY_PY_FLAGS_INTEGRATION += [
+        ('--threadless'),
+        ('--threaded'),
+    ]
+PROXY_PY_FLAGS_INTEGRATION = tuple(_PROXY_PY_FLAGS_INTEGRATION)
+
+_PROXY_PY_HTTPS = [
     ('--threadless --local-executor 0 ' + _https_server_flags()),
-    ('--threaded ' + _https_server_flags()),
-)
-
-PROXY_PY_FLAGS_TLS_INTERCEPTION = (
-    ('--threadless ' + _tls_interception_flags()),
+]
+if not IS_WINDOWS:
+    _PROXY_PY_HTTPS += [
+        ('--threadless ' + _https_server_flags()),
+        ('--threaded ' + _https_server_flags()),
+    ]
+PROXY_PY_HTTPS = tuple(_PROXY_PY_HTTPS)
+
+_PROXY_PY_FLAGS_TLS_INTERCEPTION = [
     ('--threadless --local-executor 0 ' + _tls_interception_flags()),
-    ('--threaded ' + _tls_interception_flags()),
-)
-
-PROXY_PY_FLAGS_MODIFY_CHUNK_RESPONSE_PLUGIN = (
-    (
-        '--threadless --plugin proxy.plugin.ModifyChunkResponsePlugin ' +
-        _tls_interception_flags('-chunk')
-    ),
+]
+if not IS_WINDOWS:
+    _PROXY_PY_FLAGS_TLS_INTERCEPTION += [
+        ('--threadless ' + _tls_interception_flags()),
+        ('--threaded ' + _tls_interception_flags()),
+    ]
+PROXY_PY_FLAGS_TLS_INTERCEPTION = tuple(_PROXY_PY_FLAGS_TLS_INTERCEPTION)
+
+_PROXY_PY_FLAGS_MODIFY_CHUNK_RESPONSE_PLUGIN = [
     (
         '--threadless --local-executor 0 --plugin proxy.plugin.ModifyChunkResponsePlugin ' +
         _tls_interception_flags('-chunk')
     ),
-    (
-        '--threaded --plugin proxy.plugin.ModifyChunkResponsePlugin ' +
-        _tls_interception_flags('-chunk')
-    ),
+]
+if not IS_WINDOWS:
+    _PROXY_PY_FLAGS_MODIFY_CHUNK_RESPONSE_PLUGIN += [
+        (
+            '--threadless --plugin proxy.plugin.ModifyChunkResponsePlugin ' +
+            _tls_interception_flags('-chunk')
+        ),
+        (
+            '--threaded --plugin proxy.plugin.ModifyChunkResponsePlugin ' +
+            _tls_interception_flags('-chunk')
+        ),
+    ]
+PROXY_PY_FLAGS_MODIFY_CHUNK_RESPONSE_PLUGIN = tuple(
+    _PROXY_PY_FLAGS_MODIFY_CHUNK_RESPONSE_PLUGIN,
 )
 
-PROXY_PY_FLAGS_MODIFY_POST_DATA_PLUGIN = (
-    (
-        '--threadless --plugin proxy.plugin.ModifyPostDataPlugin ' +
-        _tls_interception_flags('-post')
-    ),
+_PROXY_PY_FLAGS_MODIFY_POST_DATA_PLUGIN = [
     (
         '--threadless --local-executor 0 --plugin proxy.plugin.ModifyPostDataPlugin ' +
         _tls_interception_flags('-post')
     ),
-    (
-        '--threaded --plugin proxy.plugin.ModifyPostDataPlugin ' +
-        _tls_interception_flags('-post')
-    ),
+]
+if not IS_WINDOWS:
+    _PROXY_PY_FLAGS_MODIFY_POST_DATA_PLUGIN += [
+        (
+            '--threaded --plugin proxy.plugin.ModifyPostDataPlugin ' +
+            _tls_interception_flags('-post')
+        ),
+        (
+            '--threadless --plugin proxy.plugin.ModifyPostDataPlugin ' +
+            _tls_interception_flags('-post')
+        ),
+    ]
+PROXY_PY_FLAGS_MODIFY_POST_DATA_PLUGIN = tuple(
+    _PROXY_PY_FLAGS_MODIFY_POST_DATA_PLUGIN,
 )