Facing the frustrating "Bad Request Error 400" while trying to open a Google Script in Google Sheets? Don't worry; we've got the solution for you! In this video, we'll show you how to resolve this issue step by step.

Watch the youtube video now:

The key to solving this problem is to ensure you are logged in with the correct Google Account. Follow these simple steps:

Log Out of All Google Accounts: Start by logging out of all your Google Accounts. Make sure you are only logged in to the Google Account that has the add-on or web app you want to access.

or

Open an Incognito Window: In Google Chrome or an equivalent private browsing window of your preferred web browser, open a new incognito session.

Log In with the Correct Account: In the incognito window, log in to the Google Account that has the add-on or web app you want to access.

By following these steps, you'll ensure that you are logged in with the correct account and eliminate the Bad Request Error 400 issue when trying to open your Google Script in Google Sheets.