Fivetran: Connection syncs encountering error "UNAVAILABLE: Network closed for unknown reason"
Incident
Report for Fivetran
Resolved
The affected connections have resumed syncing successfully.
Incident Summary
Description:
An issue was identified with multiple types of connectors, where syncs would fail with an "UNAVAILABLE: Network closed for unknown reason" error.
Timeline:
The incident began on 2025-10-02 at 04:45 UTC and was resolved on 2025-10-03 at 01:00 UTC.
Cause:
Sync errors occurred when connections reached a timeout with Fivetran servers.
Resolution:
A fix was deployed to remove the timeout and restore expected behavior. Affected connections should succeed on the next attempt, requiring no manual intervention.
Incident Summary
Description:
An issue was identified with multiple types of connectors, where syncs would fail with an "UNAVAILABLE: Network closed for unknown reason" error.
Timeline:
The incident began on 2025-10-02 at 04:45 UTC and was resolved on 2025-10-03 at 01:00 UTC.
Cause:
Sync errors occurred when connections reached a timeout with Fivetran servers.
Resolution:
A fix was deployed to remove the timeout and restore expected behavior. Affected connections should succeed on the next attempt, requiring no manual intervention.
Monitoring
A fix has been implemented and we are monitoring the results.
Identified
Beginning at 04:45 UTC, some connection syncs started failing with the following error:
"io.grpc.StatusRuntimeException: UNAVAILABLE: Network closed for unknown reason"
"io.grpc.StatusRuntimeException: UNAVAILABLE: Network closed for unknown reason"
This incident affected: Systems (General Services).