# INTERNAL_MICROFRONTENDS_INVALID_CONFIGURATION_ERROR

The `INTERNAL_MICROFRONTENDS_INVALID_CONFIGURATION_ERROR` error occurs when the configuration file for the deployment is invalid.

This error indicates that an invalid configuration file has been deployed.

## Troubleshoot

To troubleshoot this error, follow these steps:

1. Ensure the config in your `microfrontends.json` file is valid, see the [documentation](/docs/microfrontends/quickstart).
2. Ensure you are on the latest version of the [`@vercel/microfrontends`](https://www.npmjs.com/package/@vercel/microfrontends) package.
3. We have been notified of this error. For more information, check the [Vercel status page](https://www.vercel-status.com/) or [contact Vercel support](/help#issues)


--------------------------------------------------------------------------------
title: "INTERNAL_MICROFRONTENDS_UNEXPECTED_ERROR"
description: "An unexpected internal error occurred in the microfrontend."
last_updated: "2026-02-03T02:58:41.960Z"
source: "https://vercel.com/docs/errors/INTERNAL_MICROFRONTENDS_UNEXPECTED_ERROR"
--------------------------------------------------------------------------------