Global GitHub Outage – Core Services Temporarily Disrupted for Users

GitHub, the world’s largest code hosting platform, experienced significant service disruptions affecting its Issues, API Requests, and Pull Requests functionality for several hours on July 28-29, 2025.

The incident, which began around 22:40 UTC on July 28 and was fully resolved by 02:06 UTC on July 29, impacted developers worldwide who rely on these essential collaboration tools for software development projects.

Incident Timeline and Impact

The service disruption began when GitHub’s monitoring systems detected degraded performance across multiple core services.

Initially, the platform’s engineering team reported investigating “reports of degraded performance for API Requests, Issues, and Pull Requests” without immediately identifying the root cause.

As the incident progressed, it became clear that networking issues were at the heart of the problem, affecting approximately 4% of requests to the impacted services at the peak of the outage.

The incident unfolded over approximately three and a half hours, during which GitHub’s status page provided regular updates to keep users informed.

The company’s transparent communication approach included detailed timestamps and specific information about which services were affected, helping developers understand the scope of the disruption and plan their work accordingly.

Technical Challenges and Resolution

Throughout the incident, GitHub’s engineering team worked systematically to identify and address the underlying networking issues causing the service degradation.

The company’s status updates revealed a methodical approach to problem-solving, with the team initially investigating the cause before moving to mitigation strategies.

At 01:52 UTC, engineers began deploying a fix, with recovery observed across all impacted services by 02:04 UTC.

The resolution process demonstrated GitHub’s robust incident response procedures, with services returning to normal operation in stages.

Pull Requests functionality was restored by 02:05 UTC, followed by the full resolution announcement at 02:06 UTC. This systematic restoration approach helped ensure service stability as systems came back online.

Industry Implications

This incident highlights the critical dependency that modern software development has on cloud-based collaboration platforms.

With millions of developers relying on GitHub for version control, issue tracking, and code review processes, even brief service disruptions can impact productivity across the technology industry.

The timing of the incident, occurring during business hours in various global time zones, likely affected numerous development teams worldwide.

GitHub has committed to providing a detailed root cause analysis once available, which will offer valuable insights into the technical factors that led to the service disruption.

Such transparency helps maintain trust within the developer community and contributes to broader industry knowledge about maintaining reliable cloud services at scale.

The incident serves as a reminder of the importance of robust infrastructure and effective incident response procedures for platforms that serve as critical infrastructure for software development.

Find this Story Interesting! Follow us on LinkedIn and X to Get More Instant Updates