503RADARINCIDENT ARCHIVEMETHODOLOGY
RESOLVED

Zoom outage — July 31, 2026

Service Degradation Affecting Zoom Whiteboard and Task Services in US Region.

Zoom’s Multiple services was disrupted for 8h 55m on July 31, 2026. 503Radar’s sensors raised the first signal at 03:58 UTC, 8h 14m before the official status page acknowledged impact.

Key facts

DetectedJuly 31, 2026 · 03:58 UTC
Confirmed12:13 UTC · lead time 8h 14m
Resolved12:54 UTC
Duration8h 55m
ServiceMultiple services
Official recordhttps://stspg.io/q5vq1sq9c9v5

Timeline

  1. 03:58Z

    Detected · Signal

    2 crowd signals for Multiple services on ZOOM crossed the signal threshold.
  2. 12:13Z

    Confirmed · Official

    An official ZOOM status-page notice corroborated the event — 8h 14m after detection.
  3. 12:54Z

    Resolved

    Signal volume fell back below the threshold; the event was closed.

How this was detected

1 independent evidence class for Multiple services on ZOOM. 2 crowd reports across bluesky (single platform — not corroborating), z=-0.5σ vs the cell baseline. Official notice confirms it, 8h 14m after the crowd.