404 Error While Accessing Drupal Site After Migration If you have migrated a Drupal site from local development server to a live server or from one host to another host, you will generally encounter a 404 error when accessing the pages after migration. Do not freak out, this is pretty normal and can be resolved easily. Let's go through what I did so far to migrate from one host to another. Process of migrating a Drupal Site from one host to another host: On the old server: Read more � download file now