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Crossref Outage History

Every past Crossref outage tracked by IsDown, with detection times, duration, and resolution details.

There were 53 Crossref outages since May 2024. The 29 outages from the last 12 months are summarized below, with incident details, duration, and resolution information.

Major August 4, 2025

August 2025: Delayed XML Metadata Plus snapshots for August 2025

Detected Aug 4, 2025 9:24 AM EDT · Resolved Aug 7, 2025 3:23 PM EDT · Duration 3 days

Minor July 23, 2025

July 2025: Intermittent 504 (Gateway time-out) status code errors on OAI-PMH queries

Detected Jul 23, 2025 3:12 PM EDT · Resolved Aug 12, 2025 3:47 PM EDT · Duration 20 days

Minor July 22, 2025

July 2025: Delivery of July's resolution reports delayed

Detected Jul 22, 2025 1:45 PM EDT · Resolved Jul 25, 2025 5:01 AM EDT · Duration 3 days

Minor July 21, 2025

July 2025: Some indexing of metadata failing at the REST API (starting 8 July and continuing today)

Detected Jul 21, 2025 8:45 AM EDT · Resolved Aug 27, 2025 8:06 AM EDT · Duration about 1 month

Minor July 9, 2025

July 2025: Failed delivery of notification emails for very large query submissions and some forward-link alerts

Detected Jul 9, 2025 11:19 PM EDT · Resolved Aug 27, 2025 9:16 AM EDT · Duration about 2 months

Minor July 2, 2025

July 2025: Internal Server Error (500) received in Metadata deposits done via Record Form and OJS.

Detected Jul 2, 2025 4:12 AM EDT · Resolved Jul 2, 2025 10:27 AM EDT · Duration about 6 hours

Minor June 18, 2025

June 2025: Metadata Plus REST API performance lags

Detected Jun 18, 2025 9:25 AM EDT · Resolved Jun 19, 2025 11:54 AM EDT · Duration 1 day

Major June 3, 2025

June 2025: Crossref Search is down

Detected Jun 3, 2025 6:12 AM EDT · Resolved Jun 3, 2025 8:15 AM EDT · Duration about 2 hours

Major May 29, 2025

May 2025: Crossref admin tool is currently down

Detected May 29, 2025 6:56 AM EDT · Resolved May 29, 2025 7:11 AM EDT · Duration 15 minutes