Login Pages Failed to Load on Salesforce Experience Builder

When the login page will not load in Experience Builder, here are things to check:

1. Custom Components

How to check:

Setup > Digital Experiences > All Sites > Builder > Page Structure

Under this setup, please check if you can see any component that has </> beside the Trash Can icon.

</> beside the component indicates that the component is a custom component. 

Initial troubleshooting for this is to remove the custom component to see if the login page will load.

2. No Custom CSS

How to check:

Setup > Digital Experiences > All Sites > Builder > Theme > Drop-down arrow > Edit CSS

If there is custom CSS, copy and paste the custom CSS to a Notepad, remove the CSS and check if the Builder will load. Put back the custom CSS after testing.

3. No Custom Head Markup

How to check:

Setup > Digital Experiences > All Sites > Builder > Settings > Advanced > Edit Head Markup

If there is a custom Head Markup, copy and paste the custom Head Markup to a Notepad, remove the custom Head Markup (or comment out the markup) and check if the login page will load. Put back the custom markup after testing.