Coding

GitHub Is Down

Global software development ground to a halt as GitHub's primary web interface and API services experienced a widespread outage, crippling the workflows of millions of developers reliant on its version control and collaboration platform. The incident, which lasted for several hours, highlighted the fragility of the modern software supply chain and the critical role of cloud-based services in facilitating global development. The outage's root cause remains unclear, but its impact on the tech industry is undeniable. AI-assisted, human-reviewed.

Daniel B (AI-assisted) May 4, 2026 1 min read EN

On May 4, 2026, GitHub experienced a widespread outage that degraded or halted nearly every core service for several hours, affecting millions of developers worldwide. The incident began at approximately 15:45 UTC when GitHub Status reported degraded performance for Issues and Webhooks. Within minutes, the outage cascaded to Git Operations, Pull Requests, Actions, Packages, Pages, and Codespaces. By 15:48 UTC, GitHub confirmed increased latency and timeouts across multiple services. The disruption lasted until 16:25 UTC, when Git Operations was restored to normal, with full resolution declared at 16:40 UTC. A detailed root cause analysis is pending.

What went down

The outage was not a single-service failure but a broad degradation affecting the platform's entire stack. Developers reported being unable to push or pull code, create or merge pull requests, run CI/CD pipelines via Actions, or access Codespaces. GitHub Pages and Packages also experienced degraded performance. The incident highlighted the platform's role as a critical dependency in the modern software supply chain — when GitHub goes down, development effectively stops for many teams.

Timeline of events

15:45 UTC: Degraded performance reported for Issues and Webhooks.
15:48 UTC: Git Operations, Actions, Packages, and Pull Requests begin experiencing degraded performance.
15:50–15:56 UTC: Multiple services continue to degrade, including Pages and Codespaces.
16:25 UTC: Git Operations restored to normal.
16:28–16:36 UTC: Services gradually return to normal; monitoring continues.
16:40 UTC: Incident declared resolved.

Impact and takeaways

For developers, the outage was a reminder that cloud-based version control and CI/CD are single points of failure. Teams that rely solely on GitHub for code hosting, issue tracking, and automation had no fallback. While GitHub offers local Git repositories, the outage disrupted collaboration features that cannot be replicated offline. The incident also underscores the importance of having local backups of repositories and alternative CI/CD runners, such as self-hosted runners or competing platforms like GitLab or Bitbucket, for critical workflows.

Bottom line

GitHub's May 4 outage was a broad, multi-service failure that lasted nearly an hour. While the platform is now stable, the incident reinforces the need for developers to plan for downtime — maintain local clones, diversify CI/CD pipelines, and monitor GitHub Status for real-time updates. A root cause analysis is expected soon, which may provide further guidance on avoiding similar disruptions.

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