In March, we experienced one incident that resulted in degraded performance across GitHub services.
March 29 7:00 UTC (lasting 58 hours)
Between March 29 7:00 UTC and March 31 17:00 UTC, GitHub experienced service degradation due to two separate, but related incidents. On March 29, users were unable to unsubscribe from GitHub marketing email subscriptions due to a service outage. Additionally, on March 31, 2025 from 7:00 UTC to 16:40 UTC users were unable to submit ebook and event registration forms on resources.github.com, also due to a service outage.
The March 29 incident occurred due to expired credentials used for an internal service, preventing customers from being able to unsubscribe directly from marketing/sales topics through github.com/settings/emails UI and from performing the double opt-in step required by some countries. A similar credential expiry on March 31 resulted in users experiencing degradation accessing resources.github.com.
The cause of the incident was traced to an issue in the automated alerting for monitoring upcoming credential expirations. The bug in alerting resulted in the invalid credentials being discovered after they had expired. This resulted in two incidents before we could deploy a durable fix. We mitigated it by renewing the credentials and redeploying the affected services.
To improve future response times and prevent similar issues, we have enhanced our credential expiry detection, alerting, and rotation processes, and are working on improving on-call observability.
Please follow our status page for real-time updates on status changes and post-incident recaps. To learn more about what we’re working on, check out the GitHub Engineering Blog.
The post GitHub Availability Report: March 2025 appeared first on The GitHub Blog.
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