logging in

The HTTPS Status 400 Bad Request error occurs when the server can't process the request due to corrupted browser data, Kathryn. To resolve this, let's perform the troubleshooting steps below.

First, confirm that the URL you’re using to log in to your QuickBooks Self-Employed (QBSE) account is correct. If the URL is accurate, I recommend clearing your browser’s cache and removing any temporary files that might be causing the error. However, please avoid clearing your cookies, as they are important for storing user information.

You can also utilize other supported browsers that work properly with QuickBooks products.

If you have other concerns, please let us know by replying to this thread. We'll be glad to answer them.