Critical incident

Crossref: test.crossref.org is currently being monitored

Affected: Test admin tool

Current status of Crossref: Operational — live Crossref status

Timeline

1. Oct 4, 2026, 11:30 UTC
   investigating
   The test admin system has been down since about 09:30 UTC, so members will see a 503 Service Unavailable message when visiting test.crossref.org. We're investigating. -GH
2. Oct 4, 2026, 13:18 UTC
   monitoring
   The test server ran out of memory and stopped responding; we restarted it, and it's working again. If you had problems depositing or querying in the test system during this time, please try again. We'll monitor. -GH
3. Oct 4, 2026, 13:18 UTC
   monitoring
   We are continuing to monitor for any further issues.
4. Oct 5, 2026, 12:49 UTC
   resolved
   This incident has been resolved.

Updates as published by Crossref (original).