: Zapier Salesforce integration issues disrupt authentication
Zapier users attempting to add or reconnect Salesforce connections encountered authentication errors and 400 responses, blocking sign-in and reconnection for Salesforce integration flows. The issue began to impact multiple Salesforce integration versions, with signs of trouble appearing as early as the first status update and ongoing until a rollback was completed. Users attempting to reconnect their Salesforce accounts faced the error message Cross-org Auth flows are not supported for this external client app, preventing normal connection workflows.
Root cause tracking led to a rollback of the faulty update, and Salesforce connections were confirmed to be functional again as the rollout was reversed. By the rollback was in place and the team advised that you should be able to reconnect your Salesforce connections; status returned to stable at . For those who were automatically migrated to the latest Salesforce integration version and then attempted to reconnect, the issue affected their ability to authorize; reconnecting now should restore active connections.