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Temporal Cloud: Some customers in AWS us-east-1 may observe a small number of gRPC UNIMPLEMENTED errors

No impact listedStatus: resolvedStarted Resolved (0 min)1 updatestatus.temporal.io (opens in new tab)

Timeline of updates

  1. resolved

    Some customers in AWS us-east-1 may observe a small number of gRPC UNIMPLEMENTED errors returned during the time period 15:00-15:30:00 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.

From Temporal Cloud’s published incident history: for incidents before Rewindex began polling this status page, only the final update text is available.

Archive proof

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This incident predates live tracking (October 17, 2026). It came from the vendor’s own published history, which is not covered by checkpoints.

Impact, status and times are the vendor’s own, as last archived. View on status.temporal.io (opens in new tab).

Cite this

Status incident (vendor impact label: none) posted by Temporal Cloud, started 2026-05-27 15:00 UTC, resolved after 0 min, 1 update(s).

Title
Some customers in AWS us-east-1 may observe a small number of gRPC UNIMPLEMENTED errors
Vendor
Temporal Cloud
Date
URL
https://rewindex.com/company/temporal-cloud/incidents/33qc4l699h3g

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