3rd Party: Some Reddit Ads connections are failing with HTTP 401 Unauthorized 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:
We identified an issue where the Reddit connectors were failing with HTTP 401 (Unauthorized) errors.
Timeline:
This issue began on 29-01-2026 at 03:00 UTC and was resolved on 29-01-2026 at 09:00 UTC.
Cause:
Reddit introduced a change in behavior where the API was expected to return a 500 error when data was not yet ready for retrieval. However, in practice, the API began returning 401 errors instead.
Resolution:
We observed that the 401 errors were transient and resolved upon retry. As a mitigation, we implemented retry logic while we await a more permanent fix from Reddit.
Incident Summary
Description:
We identified an issue where the Reddit connectors were failing with HTTP 401 (Unauthorized) errors.
Timeline:
This issue began on 29-01-2026 at 03:00 UTC and was resolved on 29-01-2026 at 09:00 UTC.
Cause:
Reddit introduced a change in behavior where the API was expected to return a 500 error when data was not yet ready for retrieval. However, in practice, the API began returning 401 errors instead.
Resolution:
We observed that the 401 errors were transient and resolved upon retry. As a mitigation, we implemented retry logic while we await a more permanent fix from Reddit.
Monitoring
A fix has been implemented and we are monitoring the results.
Identified
The issue has been identified and we are working to resolve it.
This incident affected: Marketing connectors (Reddit Ads).