Outage in Fivetran
Fivetran: SharePoint and Microsoft Lists connections are failing with error "Authentication failed: The client secret or certificate has expired"
Resolved MajorIncident Report
Summary AI Generated
Fivetran's SharePoint and Microsoft Lists connections failed for 13.8 hours due to expired Microsoft OAuth app credentials, causing syncs to fail with authentication errors. The issue was resolved by creating and deploying new secret key credentials across all regions. All affected connectors returned to normal sync operations after the credential update was completed.
The issue has been identified and we are working to resolve it.
Components affected
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Latest Updates ( sorted recent to last )
RESOLVED
1 day ago - at 04/28/2026 02:57PM
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 for SharePoint and Microsoft Lists connections which resulted in syncs failing with a "Authentication failed: The client secret or certificate has expired" error.
Timeline:
This issue began on 2026-04-27 at 22:20:00 UTC and was resolved on 2026-04-28 at 09:30:00 UTC
Cause:
The issue occurred due to Microsoft OAuth app credentials expiration.Due to this internal workflows failed to rotate the secret keys.
Resolution:
A fix has been implemented to update these secrets.
MONITORING
1 day ago - at 04/28/2026 10:26AM
We have updated all the regions with the new secret keys and will continue to monitor the connections.
MONITORING
1 day ago - at 04/28/2026 09:52AM
A new secret key credential has been created to resolve the issue. Syncs are now recovering, and we are monitoring the results.
IDENTIFIED
1 day ago - at 04/28/2026 09:51AM
Fivetran's OAuth app secret key has expired, and the team is working on creating new secret key credentials to fix the issue.
IDENTIFIED
1 day ago - at 04/28/2026 09:50AM
The issue has been identified and we are working to resolve it.
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