GitHub outage history

Biggest GitHub outages

Ranked by the official impact level, then by how long they lasted. Each has its own page with the cause, the fix time and every official update.

1. Aug 6, 2026: Incident with Actions 10 hours 42 min · rated "Critical"
2. Aug 20, 2026: Intermittent failures creating agent tasks 9 hours 54 min · rated "Critical"
3. Aug 17, 2026: Incident with GitHub.com 7 hours 36 min · rated "Critical"
4. Oct 21, 2026: Delays for Pull Requests and Webhook deliveries 4 hours 30 min · rated "Critical"
5. Oct 6, 2026: Several services are degraded 3 hours 43 min · rated "Critical"
6. Oct 5, 2026: Incident with Actions 3 hours 38 min · rated "Critical"
7. Aug 26, 2026: Incident with Actions 2 hours 50 min · rated "Critical"
8. Aug 27, 2026: Incident with Copilot AI Model Providers 2 hours 8 min · rated "Critical" · shared with GitHub Copilot
9. Sep 13, 2026: Incident with several GitHub Services 1 hour 29 min · rated "Critical"
10. Oct 19, 2026: Degraded availability for GitHub Actions, GitHub Pages and Webhooks 1 hour 8 min · rated "Critical"

More major and long GitHub incidents

• Oct 7, 2026, 17:17 UTC: Incident with Git Operations, Issues, Actions and Pull Requests 48 minutes, rated "Critical"
• Oct 5, 2026, 23:47 UTC: Disruption with some GitHub services 1 hour 45 min, rated "Major"
• Sep 16, 2026, 07:20 UTC: Degradation with Gemini 3.8 Flash 10 hours 28 min, rated "Major"
• Aug 12, 2026, 21:39 UTC: Disruption with Login and Release Asset downloads 1 hour 18 min, rated "Major"

Every smaller GitHub incident

Minor and short incidents from the GitHub status page, newest first, each with a line from the official updates. Times are UTC.

October 2026

• Oct 15, 2026, 18:31 UTC · CCA Automations are delayed when starting an Automation

  24 minutes · rated "Minor"

  "We suspected that CCA Automations were experiencing delays when users start an Automation, but further investigation found that there was no delay or impact to CCA Automations."

• Oct 14, 2026, 00:12 UTC · [Retroactive] Actions workflow run logs delayed

  duration not stated · rated "Minor"

  "On October 13, around 20:42 UTC, an infrastructure failure caused GitHub Actions to have delays showing logs for workflow runs. No logs were lost and the issue has now been resolved and log processing has caught up."

• Oct 12, 2026, 12:21 UTC · Incident with Actions, Pull Requests and Issues

  7 hours 54 min · rated "Minor"

  "On October 12th 2026 11:51 UTC GitHub experienced elevated 500 responses across several application pages. This caused failures on Issues and Pull Requests as well as Projects and Actions."

• Oct 7, 2026, 16:25 UTC · Incident with Git Operations, Pull Requests and Actions

  duration not stated · rated "Critical"

  "On October 7, 2026, GitHub had two outages of write operations with the same cause, totaling about 19 minutes. The first ran from 15:06 to 15:16 UTC (about 10 minutes) and the second from 16:52 to 17:01 UTC (about 9 minutes)."

• Oct 1, 2026, 14:47 UTC · Actions Job Delays

  3 hours 9 min · rated "Minor"

  "On October 1, 2026, GitHub Actions experienced two periods of delayed and failed job starts on GitHub-hosted runners, beginning at approximately 14:15 UTC. Across the 14:15-17:56 UTC incident-response window, approximately 0."

• Oct 1, 2026, 13:37 UTC · Elevated request latency

  20 minutes · rated "Minor"

  "On October 1, 2026, between 13:04 UTC and 13:34 UTC, users experienced two periods of slow page loads and intermittent request failures on GitHub.com. On average, the error rate was 0.52% and peaked at 6.13%."

• Oct 1, 2026, 11:34 UTC · [Retroactive] Actions workflow run failures after deployment gate approvals

  duration not stated · rated "Minor"

  "On October 1, around 02:00 UTC, an isolated infrastructure failure caused GitHub Actions to lose execution state for a small number of existing workflow runs."

September 2026

• Sep 28, 2026, 21:16 UTC · Copilot Code Review is unable to complete reviews

  52 minutes · rated "Critical"

  "On September 28, 2026, between 19:23 UTC and 22:08 UTC the Copilot Code Review service was degraded and pull request reviews did not complete in all environments. On average, approximately 70% of requested reviews did not complete."

• Sep 24, 2026, 16:51 UTC · Disruption with billing information updates

  3 hours 50 min · rated "Minor"

  "Beginning on September 22, 2026 at 11:51 UTC, approximately 1,700 users experienced delays and errors when adding or updating billing address information because requests to the address validation service timed out or failed."

• Sep 23, 2026, 10:11 UTC · Incident across several services

  18 hours 44 min · rated "Minor"

  "Starting at 07:57 UTC on September 23, GitHub experienced elevated 500 and 404 responses across several application pages."

• Sep 20, 2026, 22:13 UTC · Incident with Pull Requests

  1 hour 9 min · rated "Minor"

  "On September 20, 2026, between 21:46 and 22:24 UTC the Pull Requests service was degraded and pull request merge and test-merge commits were created late, with delays reaching approximately four minutes at peak."

• Sep 17, 2026, 20:59 UTC · Elevated rate of errors for OpenAI models provided by Copilot

  50 minutes · rated "Minor"

  "Between 20:26 and 21:17 UTC on September 17, 2026, GitHub Copilot experienced degradation affecting several GPT models, including GPT-5.6 Luna, GPT-5.6 Terra, GPT-5.6 Sol, GPT-5.3-Codex, and GPT-6 Astra."

• Sep 15, 2026, 19:11 UTC · Disruption with some GitHub services

  49 minutes · rated "Minor"

  "On September 15, 2026 between 15:30 and 20:00 UTC, some Copilot code reviews on pull requests failed to complete."

• Sep 15, 2026, 09:47 UTC · Disruption with some GitHub services

  1 hour 30 min · rated "Minor"

  "On September 15, 2026, between 05:45 and 09:50 UTC, the Claude Fable 5.1 model in GitHub Copilot experienced intermittently degraded availability, with an average error rate of 2.8%."

• Sep 14, 2026, 18:40 UTC · Actions Larger Runner Jobs for some customers may be slow to start

  55 minutes · rated "Minor"

  "On September 14, 2026, between 16:10 and 19:01 UTC, some customers using GitHub Actions larger runners experienced longer-than-normal wait times for jobs to start. During this period, 5.7% of larger-runner jobs were affected."

• Sep 4, 2026, 22:02 UTC · Degradation in repos contents API

  21 minutes · rated "Minor"

  "On September 4, 2026, between approximately 21:45 and 22:07 UTC, some users experienced errors and elevated latency for repository operations. The incident was fully resolved at 22:23 UTC."

• Sep 4, 2026, 20:39 UTC · Disruption with Copilot Code Review

  1 hour 48 min · rated "Major"

  "On September 4, 2026, between 20:04 and 22:26 UTC, GitHub Copilot code review experienced an increased failure rate. Affected pull request reviews failed to complete or post review comments."

• Sep 3, 2026, 14:17 UTC · Incident with Grok Copilot AI Model Provider

  2 hours 54 min · rated "Minor"

  "Between 13:22 and 17:11 UTC on September 03, 2026, GitHub Copilot experienced degradation affecting several Grok models, including Grok 4.5 and Grok 4.6. Users encountered elevated error rates, but other models were not affected."

• Sep 1, 2026, 15:00 UTC · Delays in commit processing

  1 hour 1 min · rated "Minor"

  "On September 1, 2026, between approximately 14:01 and 16:01 UTC, updates in response to pushes were delayed, temporarily showing stale diffs."

August 2026

• Aug 31, 2026, 09:15 UTC · Elevated rate of errors for OpenAI models provided by Copilot

  42 minutes · rated "Minor"

  "Between 08:37 and 09:41 UTC on August 31, 2026, GitHub Copilot experienced degradation affecting several GPT models, including gpt-5.2, gpt-5.3-codex, gpt-5.4, gpt-5.4-mini, gpt-5.4-nano, and the gpt-5.6 family (Luna, Sol, and Terra)."

• Aug 26, 2026, 23:37 UTC · Disruption with GitHub Billing

  20 hours 7 min · rated "Minor"

  "On August 26, 2026, between 20:40 UTC and 00:51 UTC on August 27, GitHub Billing experienced degraded performance affecting billing budget pages and GitHub Copilot CLI sessions."

• Aug 26, 2026, 22:56 UTC · Incident with Actions and Pull Requests

  1 hour 30 min · rated "Minor"

  "On August 26, 2026, from 21:55 UTC to 23:58 UTC, 2.6% of workflow runs triggered by pull request events were delayed, with the impact rising as high as 25% at its peak."

• Aug 26, 2026, 15:09 UTC · Disruption with some GitHub services

  59 minutes · rated "Minor"

  "Please refer to the combined summary in this related incident: https://www.githubstatus.com/incidents/y1t7p9fzrlj2"

• Aug 24, 2026, 13:56 UTC · Actions delays in starting runs

  38 minutes · rated "Minor"

  "On August 24, 2026, between 13:33 UTC and 14:04 UTC, 3.8% of Actions runs experienced start delays over 5 minutes with 1.25% of Actions runs failing outright."

• Aug 24, 2026, 07:19 UTC · Degraded Git Operations over SSH

  duration not stated · marked as no impact

  "On August 21, 2026, between 14:00 and 14:07 UTC, dotcom Git operations over SSH were degraded."

• Aug 24, 2026, 07:12 UTC · Elevated errors on Fable 5 due to upstream provider

  47 minutes · rated "Major"

  "On August 24th, 2026, between approximately 06:35 and 07:25 UTC, the Copilot service experienced a degradation of the Claude Fable 5 model due to an issue with our upstream provider."

• Aug 18, 2026, 09:36 UTC · Incident with Actions

  47 minutes · rated "Major"

  "On August 18, 2026, between 05:02 UTC and 11:30 UTC, customers were unable to run jobs on Actions Larger Runners and were unable to view or manage Actions Runners and Runner Groups through the GitHub UI and API."

• Aug 18, 2026, 07:40 UTC · Intermittent failures in runner group and runner-related permissions pages

  4 hours 2 min · rated "Minor"

  "On August 18, 2026, between 05:02 UTC and 11:30 UTC, customers were unable to view or manage Actions Runners and Runner Groups through the GitHub UI and API."

• Aug 13, 2026, 16:21 UTC · Disruption with GHEC Team Sync

  2 hours 6 min · rated "Minor"

  "On August 13, 2026, from 15:31:21 UTC to 18:27:55 UTC, GitHub Enterprise Cloud team synchronization was degraded for enterprises using personal accounts."

• Aug 13, 2026, 14:45 UTC · Incident with Webhooks

  51 minutes · rated "Minor"

  "Between 14:24 and 14:53 UTC on 13 August 2026, a routine background job to delete an organization overwhelmed a key shared database, causing multiple GitHub services to briefly return elevated errors and slower responses."

• Aug 13, 2026, 14:43 UTC · Errors with the Fable 5 Model in Copilot

  1 hour 4 min · rated "Minor"

  "On August 13th, 2026, between approximately 14:06 and 15:47 UTC, the Copilot service experienced a degradation of the Claude Fable 5 model due to an issue with our upstream provider."

• Aug 12, 2026, 16:16 UTC · Incident with Pull Requests and Issues

  25 minutes · rated "Minor"

  "Between 16:03 and 16:29 UTC on August 12, some users encountered errors when viewing pull requests, issues, and search results. During this period, about 1.9% of Pull Request requests and 0.9% of Issues requests failed."

• Aug 11, 2026, 14:50 UTC · Incident with GraphQL API Requests

  5 hours 16 min · rated "Minor"

  "On August 11, 2026, between 14:00 UTC and 16:00 UTC the GraphQL API service was degraded and customers in saw higher than normal timeouts. On average, the timeout rate was 0.06% and peaked at 0.14% of requests routing to the service."

• Aug 10, 2026, 20:27 UTC · Disruption with Copilot for access to some models

  1 hour 23 min · rated "Minor"

  "On August 10, 2026, between 19:48 UTC and 20:49 UTC, GitHub Copilot users saw an incomplete list of available models. During this window, the service could return as few as one model instead of the full catalog."

• Aug 10, 2026, 18:02 UTC · Disruption with creation of fine grained personal access tokens

  44 minutes · rated "Minor"

  "On August 10, 2026, between 17:16 and 18:21 UTC, users were unable to create new fine-grained personal access tokens (FG PAT) through the GitHub website."

• Aug 6, 2026, 15:03 UTC · Incident with Pages - Deployment Lag

  1 hour 19 min · rated "Minor"

  "On August 6, 2026, at 07:00 UTC, a configuration change inadvertently reduced the capacity of the service that processes GitHub Pages deployments."

• Aug 5, 2026, 11:38 UTC · Some Copilot Cloud Agent jobs not starting

  1 hour 21 min · rated "Minor"

  "On August 5, 2026, between 11:02 and 11:54 UTC, the GitHub Copilot cloud agent service was degraded and new cloud agent jobs were delayed from starting. During this period 100% of newly submitted agent jobs were affected."

• Aug 3, 2026, 09:53 UTC · Incident with Copilot

  1 hour 32 min · rated "Minor"

  "On 2026-08-03, between 06:52 and 11:25 UTC, some GitHub Copilot users experienced errors when using chat and agent features."