Chatter is turned off by default in all Salesforce orgs created in Summer ’26 and later. To create an Aura site from the Customer Service template or add feeds to an Aura or LWR site in these orgs, enable Chatter. This change doesn’t affect orgs created before Summer ’26.
Where: This change applies to Aura, LWR, and Visualforce sites accessed through Lightning Experience and Salesforce Classic in Enterprise, Performance, Unlimited, and Developer editions.
How: To turn on Chatter, in Setup, search for and select Chatter Settings, click Edit, and select Enable. After you enable Chatter, the Customer Service template is available for selection when you create an Experience Cloud site, and you can add feeds to your Aura or LWR site.