diff --git a/.chronus/changes/fix_pkg_manager_detection-2026-2-19-14-33-30.md b/.chronus/changes/fix_pkg_manager_detection-2026-2-19-14-33-30.md
new file mode 100644
index 00000000000..3ed9d56f102
--- /dev/null
+++ b/.chronus/changes/fix_pkg_manager_detection-2026-2-19-14-33-30.md
@@ -0,0 +1,7 @@
+---
+changeKind: fix
+packages:
+  - "@typespec/http-client-python"
+---
+
+Fix PermissionError when detecting package manager on WSL
\ No newline at end of file
diff --git a/packages/http-client-python/eng/scripts/setup/package_manager.py b/packages/http-client-python/eng/scripts/setup/package_manager.py
index 87235ef690a..3b6698279d9 100644
--- a/packages/http-client-python/eng/scripts/setup/package_manager.py
+++ b/packages/http-client-python/eng/scripts/setup/package_manager.py
@@ -25,7 +25,7 @@ def _check_command_available(command: str) -> bool:
     try:
         subprocess.run([command, "--version"], capture_output=True, check=True)
         return True
-    except (subprocess.CalledProcessError, FileNotFoundError):
+    except (subprocess.CalledProcessError, FileNotFoundError, PermissionError):
         return False
 
 
@@ -50,7 +50,7 @@ def detect_package_manager() -> str:
     try:
         subprocess.run([sys.executable, "-m", "pip", "--version"], capture_output=True, check=True)
         return "python -m pip"
-    except (subprocess.CalledProcessError, FileNotFoundError):
+    except (subprocess.CalledProcessError, FileNotFoundError, PermissionError):
         pass
 
     raise PackageManagerNotFoundError("No suitable package manager found. Please install either uv or pip.")