GitHub outage, 27 October 2026
Elevated 404s for GitHub App s2s tokens in git/API
- Started
- Resolved
- 27 Oct 2026, 08:00 UTC - reported afterwards
- Impact
- Not stated
Is this still happening?
No. GitHub marked this incident resolved.
Right now: GitHub reports all systems operational. (as of 27 Oct, 21:49 UTC) Live GitHub status
Last update from GitHub
Between 0655 and 0801 UTC on 10/27, customers experienced increased failure rates for API and git requests authenticated with server-to-server tokens for GitHub Apps (excluding Actions tokens). During this window, authenticated git operations mistakenly returned 404 for 1.24% (2.6x) of requests on average and 2.49% (5.3x) at peak. These failures were caused by a scheduled maintenance event where GitHub migrated 7 tables between two MySQL clusters in our IAD and Azure Central US datacenters. One of the affected tables stores installation records for GitHub App server-to-server tokens (excluding Actions). We've successfully completed several of these migrations in recent months without notabl...