diff --git a/codex-rs/Cargo.lock b/codex-rs/Cargo.lock
index 958d6ca2cb..c403f0b5a0 100644
--- a/codex-rs/Cargo.lock
+++ b/codex-rs/Cargo.lock
@@ -2867,6 +2867,7 @@ dependencies = [
  "wildmatch",
  "winapi-util",
  "windows-sys 0.61.2",
+ "winreg 0.55.0",
 ]
 
 [[package]]
diff --git a/codex-rs/Cargo.toml b/codex-rs/Cargo.toml
index 5e1b303315..8392dea799 100644
--- a/codex-rs/Cargo.toml
+++ b/codex-rs/Cargo.toml
@@ -553,6 +553,7 @@ whoami = "1.6.1"
 wildmatch = "2.6.1"
 winapi-util = "0.1.11"
 windows-sys = "0.61.2"
+winreg = "0.55.0"
 # Keep the zip 2.x feature set. In zip 9, `bzip2-rs` selects the bzip2-sys
 # backend we already build; the default selects libbz2-rs-sys instead.
 zip = { version = "9.0.0", default-features = false, features = [
diff --git a/codex-rs/config/Cargo.toml b/codex-rs/config/Cargo.toml
index 0fc87168fa..42d19e2b91 100644
--- a/codex-rs/config/Cargo.toml
+++ b/codex-rs/config/Cargo.toml
@@ -63,6 +63,7 @@ windows-sys = { workspace = true, features = [
     "Win32_System_Com",
     "Win32_UI_Shell",
 ] }
+winreg = { workspace = true }
 
 [dev-dependencies]
 pretty_assertions = { workspace = true }
diff --git a/codex-rs/config/src/loader/mod.rs b/codex-rs/config/src/loader/mod.rs
index 46dbb8b055..e65847ce49 100644
--- a/codex-rs/config/src/loader/mod.rs
+++ b/codex-rs/config/src/loader/mod.rs
@@ -814,6 +814,16 @@ fn windows_codex_system_dir() -> PathBuf {
 
 #[cfg(windows)]
 fn windows_system_requirements_toml_file() -> io::Result<AbsolutePathBuf> {
+    if let Ok(path) = winreg::RegKey::predef(winreg::enums::HKEY_LOCAL_MACHINE)
+        .open_subkey_with_flags(
+            r"SOFTWARE\Policies\OpenAI\Codex",
+            winreg::enums::KEY_READ | winreg::enums::KEY_WOW64_64KEY,
+        )
+        .and_then(|key| key.get_value::<std::ffi::OsString, _>("RequirementsPath"))
+    {
+        return AbsolutePathBuf::from_absolute_path_checked(path);
+    }
+
     let requirements_toml_file = windows_codex_system_dir().join("requirements.toml");
     AbsolutePathBuf::try_from(requirements_toml_file)
 }
@@ -2006,24 +2016,13 @@ foo = "xyzzy"
 
     #[cfg(windows)]
     #[test]
-    fn windows_system_requirements_toml_file_uses_expected_suffix() {
+    fn windows_codex_system_dir_uses_expected_suffix() {
         let expected = windows_program_data_dir_from_known_folder()
             .unwrap_or_else(|_| PathBuf::from(DEFAULT_PROGRAM_DATA_DIR_WINDOWS))
             .join("OpenAI")
-            .join("Codex")
-            .join("requirements.toml");
-        assert_eq!(
-            windows_system_requirements_toml_file()
-                .expect("requirements.toml path")
-                .as_path(),
-            expected.as_path()
-        );
-        assert!(
-            windows_system_requirements_toml_file()
-                .expect("requirements.toml path")
-                .as_path()
-                .ends_with(Path::new("OpenAI").join("Codex").join("requirements.toml"))
-        );
+            .join("Codex");
+        assert_eq!(windows_codex_system_dir(), expected);
+        assert!(windows_codex_system_dir().ends_with(Path::new("OpenAI").join("Codex")));
     }
 
     #[cfg(windows)]
diff --git a/codex-rs/utils/absolute-path/src/lib.rs b/codex-rs/utils/absolute-path/src/lib.rs
index 4da56db06d..8751e9fc8f 100644
--- a/codex-rs/utils/absolute-path/src/lib.rs
+++ b/codex-rs/utils/absolute-path/src/lib.rs
@@ -477,10 +477,17 @@ mod tests {
 
     #[test]
     fn from_absolute_path_checked_rejects_relative_path() {
-        let err = AbsolutePathBuf::from_absolute_path_checked("relative/path")
-            .expect_err("relative path should fail");
+        for path in [
+            "",
+            "relative/path",
+            r"C:requirements.toml",
+            r"\requirements.toml",
+        ] {
+            let err = AbsolutePathBuf::from_absolute_path_checked(path)
+                .expect_err("relative path should fail");
 
-        assert_eq!(err.kind(), std::io::ErrorKind::InvalidInput);
+            assert_eq!(err.kind(), std::io::ErrorKind::InvalidInput);
+        }
     }
 
     #[test]