Temporal incident
Some customers in AWS us-east-1 may observe a small number of gRPC UNIMPLEMENTED errors
Resolved on May 27, 2026.
Some customers in AWS us-east-1 may observe a small number of gRPC UNIMPLEMENTED errors returned during the time period 15:30-16:30:00 UTC. This issue was investigated and identified as being related to a deployment in the affected region that has been rolled back - no further impact is expected.
Update timeline
- resolved May 27, 2026, 04:55 PM UTC
Some customers in AWS us-east-1 may observe a small number of gRPC UNIMPLEMENTED errors returned during the time period 15:30-16:30:00 UTC. This issue was investigated and identified as being related to a deployment in the affected region that has been rolled back - no further impact is expected.
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Amazon Web Services