WordPress Multisite Domain Redirects to Wp-Signup PHP New Multisite

 What is WordPress Multisite?

WordPress Multisite is a feature that enables users to create and manage multiple websites from a single WordPress installation. It allows administrators to set up a network of websites with shared resources, such as themes, plugins, and user accounts. Each website within the network can have its own domain or subdomain, providing a centralized platform for managing multiple sites efficiently.

Understanding the Domain Redirect Issue

The domain redirect issue occurs when a user's domain redirects to the wp-signup.php page, which is used to create a new multisite within WordPress. This issue prevents users from accessing their intended website and instead leads them to the multisite creation page.

http://www.example.com/wp-signup.php?new=example.com

Solution

AWS Lightsail

If you use Lightsail, you can define the primary domain for your WordPress Multisite instance in Amazon Lightsail.

1. Sign in to the Lightsail console.

2. On the Lightsail home page, choose the SSH quick connect icon for your WordPress Multisite instance.

   

3. Enter the following command to define the primary domain name for your WordPress Multisite instance. Be sure to replace <domain> with the correct domain name for your WordPress Multisite.

   sudo /opt/bitnami/configure_app_domain --domain <domain>

   Example:

   sudo /opt/bitnami/configure_app_domain --domain example.com

Source

https://lightsail.aws.amazon.com/ls/docs/en_us/articles/amazon-lightsail-define-the-primary-domain-for-your-wordpress-multisite

Other

Or if you use not AWS Lightsail, you can correct in wp-config.php file.

You can correct or add two lines.

define( 'DOMAIN_CURRENT_SITE', 'goodgermany.com' );

define( 'NOBLOGREDIRECT', 'http://goodgermany.com' );