Current answer
Crossref experienced a critical incident: test.crossref.org is currently being monitored. ServiceAlert observed recovery on Oct 5, 2026.
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Incident Lifecycle
Affected Components
Test admin tool
Incident Timeline
Monitoring
We are continuing to monitor for any further issues.
Oct 4, 2026 at 1:18 PM 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
-GH
Oct 4, 2026 at 1:18 PM 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
-GH
Oct 4, 2026 at 11:30 AM UTC
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