The ability to create new connected apps is disabled by default for all Salesforce orgs. This change improves security by removing the risks associated with connected apps. This update does not affect any existing connected apps, which will continue to function normally. Also, packaged, existing connected apps that are deployed in a new org aren't affected. We recommend using external client apps for all new integrations and migrating existing connected apps to external client apps.
Where: This change applies to Lightning Experience, Salesforce Classic, and all versions of the mobile app in Essentials, Professional, Enterprise, Performance, Unlimited, and Developer editions.
Why: This change addresses an ongoing security threat that takes advantage of connected apps. This change encourages the adoption of external client apps, which are a more secure, modern replacement for connected apps.
How: With Spring '26, the ability to create connected apps is disabled. The Allow creation of connected apps preference in External Client App Settings is also removed. To enable creation of new connected apps, contact Salesforce Customer Support.