Outage in Heroku
Investigating an issue with elevated H99 Errors
Resolved MinorIncident Report
Beginning at 23:17 UTC on September 24, 2025 and continuing until 00:39 UTC on September 25, 2025, impacted customers experienced elevated H99 errors on network runtime in US & EU. This issue is now resolved.
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Latest Updates ( sorted recent to last )
RESOLVED
about 1 month ago - at 09/25/2025 02:13AM
Beginning at 23:17 UTC on September 24, 2025 and continuing until 00:39 UTC on September 25, 2025, impacted customers experienced elevated H99 errors on network runtime in US & EU. This issue is now resolved.
ISSUE
about 1 month ago - at 09/24/2025 11:40PM
Beginning at 23:17 UTC on Sept 24 2025, Heroku runtime is experiencing elevated H99 platform errors in US & EU. Our engineers are working to resolve the issue.
INVESTIGATING
about 1 month ago - at 09/24/2025 11:26PM
Engineers are investigating an issue with H99 Errors in US & EU.
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