diff --git a/extensions/positron-python/src/client/positron/webAppCommands.ts b/extensions/positron-python/src/client/positron/webAppCommands.ts
index 309d922ec34..9940c5f6d79 100644
--- a/extensions/positron-python/src/client/positron/webAppCommands.ts
+++ b/extensions/positron-python/src/client/positron/webAppCommands.ts
@@ -313,8 +313,7 @@ function pathToModule(p: string): string {
     }
 
     // Otherwise, convert the path to a Python module format.
-    const parts = relativeDir.split(path.sep);
-
+    const parts = relativeDir.split(/[/\\]/);
     return parts.concat(mod).join('.');
 }
 
diff --git a/test/e2e/tests/apps/python-apps.test.ts b/test/e2e/tests/apps/python-apps.test.ts
index ef065fd96b4..e20229c9e34 100644
--- a/test/e2e/tests/apps/python-apps.test.ts
+++ b/test/e2e/tests/apps/python-apps.test.ts
@@ -39,7 +39,9 @@ test.describe('Python Applications', {
 		});
 	});
 
-	test('Python - Verify Basic FastAPI App [C903306]', async function ({ app, python }) {
+	test('Python - Verify Basic FastAPI App [C903306]', {
+		tag: [tags.WIN]
+	}, async function ({ app, python }) {
 		const viewer = app.workbench.viewer;
 
 		await app.workbench.quickaccess.openFile(join(app.workspacePathOrFolder, 'workspaces', 'python_apps', 'fastapi_example', 'fastapi_example.py'));