GitHub Outage History

GitHub Actions on macOS runners began degrading at Oct 1, 2025 8:11 AM UTC, impacting CI workflows that rely on macOS runners. Later that day, Copilot Gemini 2.5 Pro reported degraded performance across Copilot Chat, VS Code, and other Copilot products, with the maximum input length of Gemini 2.5 prompts reduced and long prompts or large context windows potentially erroring due to an upstream model provider issue. Users may have experienced slow interactions or failures when using Copilot features during this period. Over the course of the incident, GitHub issued 4 official status updates. The Actions component recovered by Oct 1, 2025 4:56 PM UTC, while Copilot remained degraded until Oct 2, 2025 10:36 PM UTC when Copilot components were restored. The outage lasted about 1 day, 14 hours, and 25 minutes in total.

GitHub Copilot experienced degraded availability affecting Claude Sonnet 3.7 and Claude Sonnet 4 models across Copilot Chat, VS Code, and other Copilot products. The degradation was due to an upstream model provider issue, with other models remaining available. The incident began on Sep 23, 2025 10:26 PM UTC and lasted about 2 hours before resolution on Sep 24, 2025 12:26 AM UTC.

GitHub's status page noted the upstream provider problem and confirmed that other Copilot models were functioning as expected. Copilot components returned to normal as services recovered.

GitHub Pages and GitHub Actions experienced degraded performance, impacting builds and published pages. Users may have encountered slower deployments and delays in page publishing during the incident. The issue affected two components: Pages and Actions.

The GitHub Codespaces service experienced degraded performance beginning at 3:04 PM UTC, with users reporting slower environments and intermittent issues for Codespaces. The disruption persisted for about 2 hours and 52 minutes, until 5:56 PM UTC.

GitHub experienced a brief degradation in the Git Operations component when unauthenticated LFS requests for public repositories started returning 401 errors. Users may have encountered authentication-related failures during LFS operations. The incident began around 5:45 PM UTC as user reports appeared, progressed to a degraded state at 6:06 PM UTC, and was resolved by 6:31 PM UTC when status returned to normal. The GitHub status page issued 2 updates during the event, noting the degraded performance and ongoing investigation.

GitHub Actions experienced a brief degradation affecting automated workflows. The GitHub Status page flagged an incident with Actions and described investigations beginning around 1:23 PM UTC. The Actions component moved to degraded at 1:26 PM UTC and the service was restored by 2:06 PM UTC, for a total duration of about 43 minutes. The incident included two official status updates detailing the investigation and resolution.

GitHub experienced degraded REST API performance affecting the API Requests component for some customers. The outage began at Sep 4, 2025 6:56 PM UTC and was resolved by Sep 4, 2025 8:26 PM UTC, lasting about 1 hour and 30 minutes. During this window users may have faced slower API responses or intermittent errors as the API showed degraded success rates.

GitHub issued 2 status updates during the incident, with the API Requests component moving from degraded to normal by the end of the window. The outage is reflected in the status page as Degraded REST API success rates for some customers.

GitHub experienced a partial outage affecting API Requests, Issues, and Copilot. Users reported degraded API responses and issues with GitHub Issues, with Copilot functionality impacted as well. The incident began at 8:51 PM UTC when API Requests moved to down and the Issues component showed degraded performance, with Copilot affected in the ensuing minutes.

Over about 45 minutes, GitHub published five status updates detailing ongoing investigation and gradual restoration. By 9:36 PM UTC all affected services had returned to normal. This event represented a broad but partial disruption across GitHub features rather than a full service outage.

GitHub Actions experienced a brief degradation in performance that affected CI workflows for some users. The issue began with reports of degraded performance for GitHub Actions around Aug 21, 2025 3:54 PM UTC, and the status page updated to Investigating at Aug 21, 2025 3:56 PM UTC. The degradation was isolated to the Actions component and did not indicate a wider GitHub failure. The incident lasted approximately 2 hours and 20 minutes before recovery.

GitHub experienced a brief degradation affecting Git Operations and Issues, with users likely encountering slower Git operations and issues-related features for about 36 minutes. The outage began around 6:25 AM UTC and was resolved by 7:01 AM UTC.

The incident was acknowledged with an investigation and quickly escalated to a degraded state, with two status updates issued during the period. The incident involved two components — Git Operations and Issues — and service was restored to normal by 7:01 AM UTC.