GitHub reported this major-impact incident on its official status page on Jul 16, 2026, 22:51 UTC. It was resolved after 1h 23m.
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From 22:21 UTC - 23:50 UTC on July 16, 2026, the REST API experienced significant degradation. During this period, about 39% of REST API requests failed with HTTP 500 level responses, with the errors peaking at 44.3%. We identified the issue as an infrastructure change that wrongly marked the majority of API backends in a single region as unhealthy. As a result, requests routed to those backends failed before reaching the application layer. To prevent this from happening again, we're improving our systems to catch this kind of invalid configuration before it reaches production. We'll also audit the related systems to make them more resilient to future changes, and we're increasing our monitoring sensitivity so we're alerted to problems like this sooner.
Our 5-minute checks didn't record a change in GitHub's overall status around this incident. Smaller or regional incidents often leave a provider's overall status green.
Overlapping incidents aren't necessarily related.
GitHub reported 66 incidents in the last 90 days, 26 of them major or critical. A typical incident lasted 1h 21m. See GitHub's uptime and incident history