3rd Party: Salesforce syncs are failing due to source availability issues and HTTP 504 Gateway Timeout errors.

This incident has been resolved. We have observed that instance rates are returning to normal levels and affected connectors are syncing successfully.

Incident Summary

Description: We identified an issue affecting Salesforce connectors which resulted in syncs failing with HTTP 504 Gateway Timeout and Salesforce source is not available at this time errors.

Timeline: This issue began on 2026-09-16 at 07:58:00 UTC and was resolved on 2026-09-16 at 14:50:00 UTC.

Cause: An upstream outage on Salesforce's platform rendered their API endpoints unavailable for over 6 hours.

Resolution: Salesforce deployed a fix to resolve their third-party service disruption. Once API availability was restored, connector success rates returned to normal.

Note on Required Re-authorization: Because Salesforce couldn't handle requests during this 6+ hour window, routine OAuth token refreshes failed, causing access and refresh tokens to lapse.

Connections whose tokens lapsed during the outage are currently displaying a Reconnect or Reauthorize OAuth task with the error invalid_grant: expired access/refresh token.

Impacted customers must re-authenticate their connection in the Fivetran Dashboard to obtain new tokens and resume syncs. Direct product communications are being sent to affected customers with re-authorization instructions.

The third-party service provider has completed the fix deployment.

We will continue to monitor all affected connectors.

Next Expected Update: 3 hours

We are closely monitoring the rollout and investigating the remaining failures.

Next Expected Update: 1 hour

The third-party service provider has validated a fix and is rolling it out to all impacted instances: https://status.salesforce.com/incidents/20004433

Next Expected Update: 1 hour

The issue is still ongoing, and Salesforce connections continue to intermittently failing.

We are monitoring the related third-party service disruption: https://status.salesforce.com/incidents/20004433 and will provide further updates as they become available.

**Next expected update:** In 1 hour

We have identified an issue where Salesforce connections are intermittently failing due to source availability issues and HTTP 504 Gateway Timeout errors. We are currently investigating in more detail.

The issue is related to an ongoing third-party service disruption: https://status.salesforce.com/incidents/20004433

Next Expected Update: 1 hour