Major incident

Crossref: Investigating an outage

Affected: Participation reports, Web deposit form

Current status of Crossref: Operational — live Crossref status

Timeline

1. Jun 16, 2026, 08:15 UTC
   investigating
   We are investigating an incident with multiple tools and services including: - Web deposit form (https://apps.crossref.org/webDeposit) - Participation Reports (https://crossref.org/members/prep/) - Browsable title list (https://www.crossref.org/titleList/) - Other reports and forms under crossref.org Starting from around 04.16am UTC on 16 June, users attempting to access these tools have been receiving 503 errors. Our technical team are investigating. We'll provide updates as soon as we know more.
2. Jun 16, 2026, 08:41 UTC
   monitoring
   A fix has been implemented. The services are available again and working as expected. We are now monitoring their performance and continuing to investigate the cause of the incident.
3. Jun 16, 2026, 11:59 UTC
   resolved
   Participation Reports, the web deposit form, and other small apps and reports have been fully operational again since about 08.30am UTC.

Updates as published by Crossref (original).