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GitHub Copilot: Issue Attachments Failing to Upload

Impact: majorStatus: resolvedStarted Resolved (45 min)1 updateSource: www.githubstatus.com (opens in new tab)

Timeline of updates

  1. resolved

    On May 1, 2025 from 22:09 UTC to 23:13 UTC, the Issues service was degraded and users weren't able to upload attachments. The root cause was identified to be a new feature which added a custom header to all client-side HTTP requests, causing a CORS errors when uploading attachments to our provider. We mitigated the incident by rolling back the feature flag that added the new header at 22:56 UTC. In order to prevent this from happening again, we are adding new metrics to monitor and ensure the safe rollout of changes to client-side requests.

From GitHub Copilot’s published incident history: for incidents before Rewindex began polling this status page, only the final update text is available.

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