Semaphore outage, 21 July 2026

Some jobs may have issues authenticating with GitHub

Started
Resolved
21 Jul 2026, 13:46 UTC (after 5 h 10 min)
Impact
Major
Affected
Semaphore

Last update from Semaphore

GitHub confirmed that the incident on their end has been resolved. You can review the GitHub update here: https://www.githubstatus.com/incidents/g40zcbvchny4

21 Jul 2026, 13:46 UTC

Read the full incident on the official Semaphore status page

Is Semaphore down now?

This page is the record of one past incident. For the live status, see Is Semaphore down right now? - it reads the official status page every 2 minutes.

Other Semaphore incidents

  1. Delays in job processing

  2. Delays in job processing

  3. Intermittent network connectivity issues

  4. Delays in job processing

  5. Intermittent cache connection errors

  6. Delays in job processing

  7. Periodic authentication failure with GitHub repositories

  8. Periodic authentication failure with GitHub repositories

All recorded Semaphore incidents