To ensure continued access to your sites, update references to your old site URLs that end in force.com. Redirections from those site URLs stop working in this release. Look for references to those URLs in Salesforce, such as in knowledge articles, and outside Salesforce, such as integrations and links in your marketing materials.
Where: This change applies to Aura, LWR, and Visualforce sites accessed through Lightning Experience and Salesforce Classic (not available in all orgs) in Enterprise, Performance, Unlimited, and Developer editions.