Salesforce announced on August 25th, 2025 that they would be introducing changes to Connected App usage beginning in September 2025.
As a result, Salesforce Admins will need to take action to unblock users from interacting with unauthorized connected apps, which Rattle may be at your organization, depending on how it was initially set up. If users report this error when attempting to connect their SFDC account to Rattle, read on.
To unblock new users connecting to Rattle for the first time, here are two approaches that can be used.
Update User Permissions
Two permissions are impacted as a result of this change. A new permission, Approve Uninstalled Connected Apps and Use Any API Client. Updating profiles with these permissions can allow the following:
Approve Uninstalled Connected Apps allows trusted users to self-authorize and continue using uninstalled apps.
Use Any API Client, is broader and covers uninstalled and blocked apps alike.
Both are powerful, and both should only be granted sparingly—to admins, developers, or others who are actively managing connected apps. Everyday users don’t need them, and giving them out too freely could undercut the whole point of this change.
Authorize Rattle as a Connected App
Our recommendation for Rattle and other Apps often used by your Salesforce users is to review and update you Connected Apps OAuth settings.
Setup > Apps > Connect Apps OAuth Usage
By installing Rattle as an Connected App, users will once again be able to seamlessly integrate with Rattle.