This incident has been resolved. Thank you for your patience and understanding as we addressed this issue. A detailed root cause analysis will be shared as soon as it is available.

On November 24, 2025, between 12:15 and 15:04 UTC, Codespaces users encountered connection issues when attempting to create a codespace after choosing the recently released VS Code Codespaces extension, version 1.18.1. Users were able to downgrade to the 1.18.0 version of the extension during this period to work around this issue. At peak, the error rate was 19% of connection requests. This was caused by mismatching version dependencies for the released VS Code Codespaces extension.

The connection issues were mitigated by releasing the VS Code Codespaces extension version 1.18.2 that addressed the issue. Users utilizing version 1.18.1 of the VS Code Codespaces extension are advised to upgrade to version >=1.18.2.

We are improving our validation and release process for this extension to ensure functional issues like this are caught before release to customers and to reduce detection and mitigation times for extension issues like this in the future.

This incident has been resolved. Thank you for your patience and understanding as we addressed this issue. A detailed root cause analysis will be shared as soon as it is available.

On October 30th we shipped a change that broke 3 links in the "Solutions" dropdown of the marketing navigation seen on https://github.com/home. We noticed internally the broken links and declared an incident so our users would know no other functionality was impacted. We were able to revert a change and are evaluating our testing and rollout processes to prevent future incidents like these.

On October 29th, 2025 between 14:07 UTC and 23:15 UTC, multiple GitHub services were degraded due to a broad outage in one of our service providers:

- Users of Codespaces experienced failures connecting to new and existing Codespaces through VSCode Desktop or Web. On average the Codespace connection error rate was 90% and peaked at 100% across all regions throughout the incident period.
- GitHub Actions larger hosted runners experienced degraded performance, with 0.5% of overall workflow runs and 9.8% of larger hosted runner jobs failing or not starting within 5 minutes. These recovered by 20:40 UTC.
- The GitHub Enterprise Importer service was degraded, with some users experiencing migration failures during git push operations and most users experiencing delayed migration processing.
- Initiation of new trials for GitHub Enterprise Cloud with Data Residency were also delayed during this time.
- Copilot Metrics via the API could not access the downloadable link during this time. There were approximately 100 requests during the incident that would have failed the download. Recovery began around 20:25 UTC.

We were able to apply a number of mitigations to reduce impact over the course of the incident, but we did not achieve 100% recovery until our service provider’s incident was resolved.

We are working to reduce critical path dependencies on the service provider and gracefully degrade experiences where possible so that we are more resilient to future dependency outages.

A cloud resource used by the Copilot bing-search tool was deleted as part of a resource cleanup operation. Once this was discovered, the resource was recreated. Going forward, more effective monitoring will be put in place to catch this issue earlier.

On September 29, 2025, between 17:53 and 18:42 UTC, the Copilot service experienced a degradation of the Gemini 2.5 model due to an issue with our upstream provider. Approximately 24% of requests failed, affecting 56% of users during this period. No other models were impacted.

GitHub notified the upstream provider of the problem as soon as it was detected. The issue was resolved after the upstream provider rolled back a recent change that caused the disruption. GitHub will continue to enhance our monitoring and alerting systems to reduce the time it takes to detect and mitigate similar issues in the future.

On September 29, 2025 between 16:26 UTC and 17:33 UTC the Copilot API experienced a partial degradation causing intermittent erroneous 404 responses for an average of 0.2% of GitHub MCP server requests, peaking at times around 2% of requests. The issue stemmed from an upgrade of an internal dependency which exposed a misconfiguration in the service.

We resolved the incident by rolling back the upgrade to address the misconfiguration. We fixed the configuration issue and will improve documentation and rollout process to prevent similar issues.

On September 26, 2025 between 16:22 UTC and 18:32 UTC raw file access was degraded for a small set of four repositories. On average, raw file access error rate was 0.01% and peaked at 0.16% of requests. This was due to a caching bug exposed by excessive traffic to a handful of repositories.

We mitigated the incident by resetting the state of the cache for raw file access and are working to improve cache usage and testing to prevent issues like this in the future.