Fivetran: Some Front Connectors Are Failing With a 401 Unauthorised Error

Incident Report for Fivetran

Resolved

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:
Some connector syncs were failing with a 401 Unauthorised error.

Timeline:
The issue started on May 8, 2025, at 10:50 UTC and was resolved on May 8, 2025, at 19:24 UTC.

Cause:
The issue was caused by a code change made to the connector that controls refreshing access tokens, which caused the syncs to fail.

Resolution:
The change was reverted, and all affected connectors have returned to normal functionality.
Posted May 08, 2025 - 21:21 UTC

Monitoring

We’ve deployed a fix to address the issue. Connectors are recovering, and we are actively monitoring their progress.
Posted May 08, 2025 - 19:49 UTC

Identified

The issue has been identified and we are working to resolve it.
Posted May 08, 2025 - 17:14 UTC
This incident affected: Support connectors (Front).
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