Is GitHub down? › Outage history › Aug 12, 2026
GitHub partial outage on Aug 12, 2026: what happened
On Aug 12, 2026, the GitHub status page reported "Disruption with Login and Release Asset downloads". About 1 hour 18 min: from Aug 12, 2026, 21:39 UTC to Aug 12, 2026, 22:56 UTC, by the official start and resolution times.
GitHub right now
At our last refresh (Oct 22, 2026, 12:35 UTC) GitHub was up: All Systems Operational.
- Started
- Aug 12, 2026, 21:39 UTC
- Resolved
- Aug 12, 2026, 22:56 UTC
- Duration
- 1 hour 18 min
- Official impact
- Major
- Source
- Disruption with Login and Release Asset downloads on the GitHub status page
The GitHub status page rated the impact "Major": a partial outage. Some parts or some users were affected; it was not a complete outage.
What caused the GitHub partial outage?
"On August 12 and 13, 2026, some anonymous (logged-out) requests to github.com experienced HTTP 5xx errors when loading pages like the sign-in page, and when downloading release assets, due to an unusual traffic pattern that repeatedly overloaded a part of our infrastructure that serves these types of requests."
From the GitHub status page, Aug 12, 2026, 22:56 UTC.
When was it fixed?
The GitHub status page marked it resolved at Aug 12, 2026, 22:56 UTC, 1 hour 18 min after it started. Its resolution note: "On August 12 and 13, 2026, some anonymous (logged-out) requests to github.com experienced HTTP 5xx errors when loading pages like the sign-in page, and when downloading release assets, due to an unusual traffic pattern that repeatedly overloaded a part of our infrastructure that serves these types ..."
Timeline of official updates
Every update the GitHub status page posted, oldest first. Times are UTC.
Aug 12, 2026, 21:39 UTC investigating
We are investigating reports of impacted performance for some GitHub services.
Aug 12, 2026, 21:43 UTC investigating
We are investigating issues with Login and when downloading Release Assets. We will continue to keep users updated on progress towards mitigation.
Aug 12, 2026, 22:22 UTC investigating
We have identified the root cause and are working on mitigation. Errors on the login page and downloading release assets have decreased, but we are not fully mitigated. We will continue to provide updates.
Aug 12, 2026, 22:56 UTC resolved
On August 12 and 13, 2026, some anonymous (logged-out) requests to github.com experienced HTTP 5xx errors when loading pages like the sign-in page, and when downloading release assets, due to an unusual traffic pattern that repeatedly overloaded a part of our infrastructure that serves these types of requests. There were three windows of impact: (1) August 12 from 16:34 to 18:34 UTC, with an average error rate of 16.16% that peaked at 28.6%; (2) August 12 from 19:00 to 22:56 UTC, with an average error rate of 16.55% that peaked at 24.18%; and (3) August 13 from 06:19 to 08:05 UTC, with an average error rate of 2.01% that peaked at 7.49%. Requests from signed-in users were unaffected. We mitigated the incidents by applying traffic controls at our network edge that limited any requests matching the pattern identified previously, thereby preventing overload on our systems. Since these incidents occurred, we have tightened our monitoring systems to alert server-side errors that affect logged-out traffic. We are also working to further strengthen our edge protections and reduce the time to detect and mitigate similar incidents.
GitHub partial outage questions
What caused the GitHub partial outage on Aug 12, 2026?
The GitHub status page said (update at Aug 12, 2026, 22:56 UTC): "On August 12 and 13, 2026, some anonymous (logged-out) requests to github.com experienced HTTP 5xx errors when loading pages like the sign-in page, and when downloading release assets, due to an unusual traffic pattern that repeatedly overloaded a part of our infrastructure that serves these types of requests."
When was the GitHub partial outage on Aug 12, 2026 fixed?
The GitHub status page marked it resolved at Aug 12, 2026, 22:56 UTC, 1 hour 18 min after it started. Its resolution note: "On August 12 and 13, 2026, some anonymous (logged-out) requests to github.com experienced HTTP 5xx errors when loading pages like the sign-in page, and when downloading release assets, due to an unusual traffic pattern that repeatedly overloaded a part of our infrastructure that serves these types ..."
How long did the GitHub partial outage last?
About 1 hour 18 min: from Aug 12, 2026, 21:39 UTC to Aug 12, 2026, 22:56 UTC, by the official start and resolution times.
Was GitHub completely down?
No. The GitHub status page rated the impact "Major": a partial outage. Some parts or some users were affected; it was not a complete outage.
Other recent GitHub incidents
- Delays for Pull Requests and Webhook deliveries Oct 21, 2026, 14:52 UTC, 4 hours 30 min
- Degraded availability for GitHub Actions, GitHub Pages and Webhooks Oct 19, 2026, 15:49 UTC, 1 hour 8 min
- CCA Automations are delayed when starting an Automation Oct 15, 2026, 18:31 UTC, 24 minutes
- [Retroactive] Actions workflow run logs delayed Oct 14, 2026, 00:12 UTC, duration not stated
- Incident with Actions, Pull Requests and Issues Oct 12, 2026, 12:21 UTC, 7 hours 54 min
- Incident with Git Operations, Issues, Actions and Pull Requests Oct 7, 2026, 17:17 UTC, 48 minutes
Full GitHub outage history and biggest outages → · Recent outages across all services →
Quotes are the GitHub status page's own words, from the official incident. Is It Up or Down is independent and not affiliated with GitHub. Times are UTC.