Outage report · Partial outage

OnceHub outage on May 30, 2025

We've identified a Microsoft-side issue preventing some Users from connecting or reconnecting their Microsoft 365 calendar to OnceHub.

SeverityPartial outage
StartedMay 30, 2025, 11:48UTC
ResolvedJun 16, 2025, 18:16UTC
Duration17d 6h

What happened

OnceHub reported a partial outage starting May 30, 2025, 11:48 UTC, affecting Third Party Integrations. It was marked resolved at Jun 16, 2025, 18:16 UTC.

  • The incident lasted 17d 6h from first report to resolution.
  • It was the longest significant outage OnceHub reported in the 12 months up to it.
  • OnceHub had reported 12 other partial or major outages in the 90 days before it.

Latest update from OnceHub

The multi-provider outage affecting Google, Zapier, and other services has been fully resolved. We have monitored the situation and confirmed that there has been no further impact of the outage after it was resolved. If you continue to experience any issues, please contact our support team at support@oncehub.com.

Read OnceHub's official incident report ↗

What our independent monitoring saw

Our independent monitoring of OnceHub started after this incident, so this report is based on OnceHub's status page.

OnceHub's overall reliability

74.8/100

OnceHub has a reliability score of 74.8/100, with 99.67% effective uptime and 2 incidents over the last 90 days.

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