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 2h 04m on July 31, 2026. 503Radar’s sensors raised the first signal at 12:54 UTC, 1h 38m before the official status page acknowledged impact.

Key facts

DetectedJuly 31, 2026 · 12:54 UTC
Confirmed14:33 UTC · lead time 1h 38m
Resolved14:59 UTC
Duration2h 04m
ServiceMultiple services
Official recordhttps://stspg.io/q5vq1sq9c9v5

Timeline

  1. 12:54Z

    Detected · Signal

    2 crowd signals for Multiple services on ZOOM crossed the signal threshold.
  2. 14:33Z

    Confirmed · Official

    An official ZOOM status-page notice corroborated the event — 1h 38m after detection.
  3. 14:59Z

    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=-0.6σ vs the cell baseline. Official notice confirms it, 1h 38m after the crowd.