Upsun (Platform.sh) outage on Sep 4, 2026

What happened

Upsun (Platform.sh) reported a partial outage starting Sep 4, 2026, 09:34 UTC. It was marked resolved at Sep 7, 2026, 12:00 UTC.

• The incident lasted 3d 2h from first report to resolution.
• It was the longest significant outage Upsun (Platform.sh) reported in the 12 months up to it.
• Upsun (Platform.sh) had reported 2 other partial or major outages in the 90 days before it.
• 6 other vendors we track reported a significant incident within 12 hours of it.

Latest update from Upsun (Platform.sh)

Status: Resolved Regions: United Kingdom (uk-1) (uk-1.platform.sh) Components: Grid Hosting Started: Fri, 04 Sep 2026 09:34:50 GMT Closed: Mon, 07 Sep 2026 12:00:26 GMT Updates: Mon, 07 Sep 2026 12:00:26 GMT: Our Team have monitored the gateways over the weekend and have not seen and further issues. This incident has been resolved. (resolved) Fri, 04 Sep 2026 13:13:04 GMT: The traffic surge overloading regional gateways is still ongoing. The connection limits protecting the sites are in place (monitoring) Fri, 04 Sep 2026 11:21:09 GMT: This incident has been resolved (resolved) Fri, 04 Sep 2026 10:41:59 GMT: There has been a traffic surge on regional gateways. We have increased the connection limits stabilizing the region and are monitoring the results (monitoring) Fri, 04 Sep 2026 10:09:09 GMT: We are still investigating this Fri, 04 Sep 2026 09:34:50 GMT: We have detected an issue affecting service on uk-1.platform.sh. Our Operations team has been notified and is currently working to

Read Upsun (Platform.sh)'s official incident report ↗

What our independent monitoring saw

Our independent monitoring of Upsun (Platform.sh) started after this incident, so this report is based on Upsun (Platform.sh)'s status page.

Other outages around the same time

Significant incidents other vendors reported within 12 hours of this one.

• Major outageHousecall ProSep 3, 2026, 21:44 UTC

  Service Instability

• Major outageSupabase AuthSep 4, 2026, 00:15 UTC

  Project Lifecycle Actions Showing increased error rates across all regions

• Major outageSupabaseSep 4, 2026, 00:15 UTC

  Project Lifecycle Actions Showing increased error rates across all regions

• Partial outageSpendeskSep 4, 2026, 11:10 UTC

  Third-Party Service Disruption : Email Notifications – Microsoft Service Disruption

• Partial outageGrafana CloudSep 4, 2026, 17:03 UTC

  Degradation of Hosted Grafana in US Central Region

• Partial outageMollieSep 4, 2026, 20:34 UTC

  External - Belfius: full disruption

Upsun (Platform.sh)'s overall reliability

Full Upsun (Platform.sh) reliability report and live status → · Most reliable Upsun (Platform.sh) alternatives →