diff --git a/src/agent_env/env/envs/computer/utils/site_proxy.py b/src/agent_env/env/envs/computer/utils/site_proxy.py
index 64fdc3728..81c4cc421 100644
--- a/src/agent_env/env/envs/computer/utils/site_proxy.py
+++ b/src/agent_env/env/envs/computer/utils/site_proxy.py
@@ -25,7 +25,6 @@
 import hashlib
 import json
 import os
-import pwd
 import re
 import shutil
 import socket
@@ -41,6 +40,11 @@
 from typing import Optional
 from urllib.parse import urlsplit, urlunsplit
 
+try:
+    import pwd
+except ImportError:  # Windows, which agent-env does not target, imports is_local and matches from here on its host.
+    pwd = None
+
 HOSTS_BEGIN = "# agentenv sites"
 HOSTS_END = "# end agentenv sites"
 LOOPBACK = "127.0.0.1"
diff --git a/tst/unit/env/envs/test_computer_site_proxy.py b/tst/unit/env/envs/test_computer_site_proxy.py
index 4708de923..b8437438d 100644
--- a/tst/unit/env/envs/test_computer_site_proxy.py
+++ b/tst/unit/env/envs/test_computer_site_proxy.py
@@ -14,6 +14,7 @@
 import socket
 import ssl
 import struct
+import subprocess
 import sys
 import urllib.error
 from datetime import timedelta
@@ -984,6 +985,12 @@ def missing(name):
     assert (Config.load(str(serve_path)).user, Config.load(str(serve_path)).serve_user) == ("agent", "nobody")
 
 
+def test_the_proxy_imports_when_pwd_is_unavailable():
+    subprocess.run([sys.executable, "-c", "import sys; sys.modules['pwd'] = None; "
+                    "from agent_env.env.envs.computer.utils import site_proxy, sites; assert site_proxy.pwd is None"],
+                   check=True)
+
+
 def test_keep_starts_serve_again_each_time_it_ends(monkeypatch):
     runs = []