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Crossref is operational right now. Last checked 3m ago; the most recent incident resolved 2d ago.

Real-time Crossref status, recent outages, and incident history: pulled directly from Crossref's official status page at status.crossref.org every 5 minutes. Pingoru tracks 31 Crossref services and has captured 26 incidents in the last 90 days (99.33% uptime). Get email, Slack, Discord, or webhook alerts the moment Crossref reports a new incident, free for 3 monitors, no credit card.

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Crossref uptime 99.33% uptime · past 90 days
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Recent outages & incidents

Past 90 days
  1. New funder matches not available via the Metadata Plus REST API pool
    Resolved 7d 13h
    Started Oct 21, 2026, 12:01 PM UTC · Resolved Oct 29, 2026, 01:10 AM UTC
    Plus REST APIJSON Snapshots
    Timeline · 9 updates
    • identified · Oct 21, 2026, 12:01 PM UTC

      On 15 September, we updated the method to identify identifiers for funders in metadata. The new matches were not, however, added to the REST API Metadata Plus pool and we did not notice until today (21 October). We have identified the issue and are implementing a fix. The affected time means that these matches are also missing from the most recent JSON snapshot. All data will be back-filled in the REST API and will be included in the next issued snapshot.

    • identified · Oct 23, 2026, 12:55 PM UTC

      We are testing a solution for this issue and will post another update once the fix has been deployed.

    • identified · Oct 23, 2026, 06:55 PM UTC

      We have implemented a fix and newly updated works include matches of funder names to ROR IDs in the Metadata Plus pool. We are starting to reindex the backlog of records with missing data. We expect the update process to take up to 24 hours.

    • identified · Oct 24, 2026, 06:42 AM UTC

      All affected records have been reindexed and we are monitoring the solution.

    • monitoring · Oct 24, 2026, 06:42 AM UTC

      A fix has been implemented and we are monitoring the results.

    • monitoring · Oct 26, 2026, 03:20 PM UTC

      We are continuing to monitor for any further issues.

    • monitoring · Oct 27, 2026, 03:56 PM UTC

      We are continuing to monitor for any further issues.

    • monitoring · Oct 28, 2026, 06:02 PM UTC

      We are running some additional tests on our end to be sure that this incident is resolved. For now, while we continue testing and monitoring, we're leaving the incident in the monitoring status. More as we have it. -IF

    • resolved · Oct 29, 2026, 01:10 AM UTC

      This incident has been resolved.

    Latest: This incident has been resolved.

  2. Content Registration Outage and Instability
    Resolved 2d 22h
    Started Oct 16, 2026, 09:35 PM UTC · Resolved Oct 19, 2026, 08:20 PM UTC
    Admin toolWeb deposit formNew Metadata Manager
    Timeline · 2 updates
    • monitoring · Oct 16, 2026, 09:35 PM UTC

      The metadata deposit and query processing queue was down for roughly 30 minutes starting around 20:40 UTC.  It was brought back online around 21:10 UTC. We are monitoring for any possible ongoing instability.

    • resolved · Oct 19, 2026, 08:20 PM UTC

      This incident has been resolved.

    Latest: This incident has been resolved.

  3. Metadata Plus REST API not validating API keys
    Resolved 4h 3m
    Started Oct 05, 2026, 12:21 PM UTC · Resolved Oct 05, 2026, 04:25 PM UTC
    Plus REST API
    Timeline · 5 updates
    • investigating · Oct 05, 2026, 12:21 PM UTC

      Request to the Metadata Plus pool of the REST API are receiving 401 responses (access denied). We are investigating the cause.

    • investigating · Oct 05, 2026, 12:41 PM UTC

      The API is back up but we are still investigating and monitoring.

    • investigating · Oct 05, 2026, 12:49 PM UTC

      We are continuing the investigate the outage. The Plus pool was down between 12:00 and 12:36 on 5 Oct, 2026.

    • monitoring · Oct 05, 2026, 01:01 PM UTC

      A fix has been implemented and we are continuing to monitor the performance of the Metadata Plus pool.

    • resolved · Oct 05, 2026, 04:25 PM UTC

      We have identified the problem due to a bug in a deployment. The deployment was reversed and the Plus pool of the API is working normally again.

    Latest: We have identified the problem due to a bug in a deployment. The deployment was reversed and the Plus pool of the API is working normally again.

  4. test.crossref.org is currently being monitored
    Resolved 1d 1h
    Started Oct 04, 2026, 11:30 AM UTC · Resolved Oct 05, 2026, 12:49 PM UTC
    Test admin tool
    Timeline · 4 updates
    • investigating · Oct 04, 2026, 11:30 AM UTC

      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

    • monitoring · Oct 04, 2026, 01:18 PM UTC

      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

    • monitoring · Oct 04, 2026, 01:18 PM UTC

      We are continuing to monitor for any further issues.

    • resolved · Oct 05, 2026, 12:49 PM UTC

      This incident has been resolved.

    Latest: This incident has been resolved.

  5. Test admin tool - test.crossref.org - is down
    Resolved 23m
    Started Sep 27, 2026, 01:22 AM UTC · Resolved Sep 27, 2026, 01:45 AM UTC
    Test admin tool
    Timeline · 3 updates
    • investigating · Sep 27, 2026, 01:22 AM UTC

      Our test admin tool is down at the moment. Members are receiving a 503 service unavailable message when trying to access test.crossref.org. -IF

    • monitoring · Sep 27, 2026, 01:38 AM UTC

      A fix has been implemented and we are monitoring the results.

    • resolved · Sep 27, 2026, 01:45 AM UTC

      This incident has been resolved.

    Latest: This incident has been resolved.

See the full Crossref outage history

7 more incidents in the last 90 days, plus the full multi-year archive of per-service events and update timelines.

Browse Crossref outage history →

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Incident record

Since April 2026 · Statuspage by Atlassian · 31 components checked every 5 minutes
53incidents recorded
39last 12 months
12last 90 days
3 daystypical duration, 12 months

The longest incident in the last year, Dropped sessions when adding contributors to Metadata Manager registrations on December 2, 2025, ran for 31 days. 51 maintenance windows announced in the same period.

Most affected components, last 12 months

  • Plus REST API7
  • Polite REST API6
  • Public REST API6
  • Test admin tool6
  • Web deposit form6

Latest incidents

Outage history

Past 90 days · 12 incidents View full outage history →