diff --git a/launch/core/platforms/windows.py b/launch/core/platforms/windows.py
index 28c146e..745126e 100644
--- a/launch/core/platforms/windows.py
+++ b/launch/core/platforms/windows.py
@@ -21,6 +21,20 @@
 import queue
 import uuid
 
+
+# Go integration tests use ``fakerepo`` as a deliberately unreachable local
+# registry. Keep it off the evaluator's outbound proxy so the test observes
+# the expected direct socket error instead of a proxy-generated EOF.
+DEFAULT_WINDOWS_CONTAINER_NO_PROXY = "localhost,127.0.0.1,::1,fakerepo"
+
+
+def get_windows_container_no_proxy() -> str:
+    """Return the container proxy bypass list, honoring an explicit override."""
+    return os.environ.get(
+        "SWE_WINDOWS_CONTAINER_NO_PROXY", DEFAULT_WINDOWS_CONTAINER_NO_PROXY
+    )
+
+
 import docker
 from docker.models.containers import Container
 
@@ -159,6 +173,14 @@ def _start_container(
             detach=True,
             environment={
                 "TERM": "xterm-mono",
+                # The proxy is optional. When enabled, ensure local test
+                # endpoints still use direct networking semantics.
+                **({
+                    "HTTP_PROXY": os.environ.get("SWE_WINDOWS_CONTAINER_PROXY"),
+                    "HTTPS_PROXY": os.environ.get("SWE_WINDOWS_CONTAINER_PROXY"),
+                    "ALL_PROXY": os.environ.get("SWE_WINDOWS_CONTAINER_PROXY"),
+                    "NO_PROXY": get_windows_container_no_proxy(),
+                } if os.environ.get("SWE_WINDOWS_CONTAINER_PROXY") else {}),
             },
             working_dir=working_dir,
             extra_hosts=extra_hosts,
diff --git a/tests/runtime_test.py b/tests/runtime_test.py
index 809ec3d..b50cd41 100644
--- a/tests/runtime_test.py
+++ b/tests/runtime_test.py
@@ -49,7 +49,11 @@
 
 from launch.core.runtime import SetupRuntime
 from launch.core.platforms.linux import LinuxRuntime
-from launch.core.platforms.windows import WindowsRuntime
+from launch.core.platforms.windows import (
+    DEFAULT_WINDOWS_CONTAINER_NO_PROXY,
+    WindowsRuntime,
+    get_windows_container_no_proxy,
+)
 from launch.core.platforms.android import AndroidRuntime
 #from launch.core.platforms.macos import MacosRuntime
 
@@ -66,6 +70,15 @@ class FakeSocket:
     pass
 
 
+def test_windows_container_no_proxy_default_and_override(monkeypatch):
+    monkeypatch.delenv("SWE_WINDOWS_CONTAINER_NO_PROXY", raising=False)
+    assert get_windows_container_no_proxy() == DEFAULT_WINDOWS_CONTAINER_NO_PROXY
+    assert "fakerepo" in DEFAULT_WINDOWS_CONTAINER_NO_PROXY.split(",")
+
+    monkeypatch.setenv("SWE_WINDOWS_CONTAINER_NO_PROXY", "custom.local")
+    assert get_windows_container_no_proxy() == "custom.local"
+
+
 class FakeContainer:
     def __init__(self, sock: FakeSocket):
         self.sock = sock