What steps should website administrators or developers take to fix a 404 error on their site?

Website administrators should first identify the source of the 404 errors. This can be done using server logs, Google Search Console, or website crawling tools. Once identified, common solutions include: setting up 301 (permanent) redirects for moved or deleted pages to their new location or a relevant alternative, correcting broken internal links, verifying file paths and names on the server, ensuring correct server configuration (e.g., .htaccess file for Apache), and restoring missing files if they were accidentally deleted.