Temporal incident

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

Notice Resolved View vendor source →

Temporal experienced a notice incident on May 27, 2026, lasting —. The incident has been resolved; the full update timeline is below.

Started
May 27, 2026, 03:00 PM UTC
Resolved
May 27, 2026, 03:00 PM UTC
Duration
—
Detected by Pingoru
May 27, 2026, 03:00 PM UTC

Update timeline

  1. 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.