Crossref Status: check for Crossref outages and issues

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Crossref APIs

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Public REST API

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Some indexing of metadata failing at the REST API (8 and 16-20 July)

Started 21 Jul 2025 12:45:49 (4 days ago), still ongoing

Minor Incident

Identified

Public REST API

Plus REST API

Polite REST API

We have found that some records failed to be indexed by the REST API on 8 July and then again from 16 to 20 July. We believe this is related to our recent data centre migration (https://status.crossref.org/incidents/s92nm4xn1w84). Our technical team is investigating. -IF

See all updates

Polite REST API

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Some indexing of metadata failing at the REST API (8 and 16-20 July)

Started 21 Jul 2025 12:45:49 (4 days ago), still ongoing

Minor Incident

Identified

Public REST API

Plus REST API

Polite REST API

We have found that some records failed to be indexed by the REST API on 8 July and then again from 16 to 20 July. We believe this is related to our recent data centre migration (https://status.crossref.org/incidents/s92nm4xn1w84). Our technical team is investigating. -IF

See all updates

OAI-PMH

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

Started 23 Jul 2025 19:12:26 (2 days ago), still ongoing

Minor Incident

Investigating

Plus OAI-PMH

OAI-PMH

We have had metadata users report that they are receiving intermittent 504 (Gateway time-out) status code errors on calls to OAI-PMH endpoints. We have been able to replicate and are currently investigating. -IF

See all updates

XML API

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Event Data Query API

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OpenURL

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Crossmark dialog server

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Failed delivery of notification emails after registration

Started 11 Jul 2025 21:16:58 (14 days ago), still ongoing

Minor Incident

Identified

Metadata Manager

Crossmark dialog server

As a result of our recent AWS migration (https://status.crossref.org/incidents/s92nm4xn1w84), Metadata Manager submissions are currently returning 'TypeError' error messages and our depositor reports are returning a 404 'Not Found' status code error message. Our technical team is working on a fix. -IF

Identified: We are continuing to work on a fix for this issue.

23 Jul 2025 20:20:22 (2 days ago)

Identified: We have resolved the problems for the vast majority of members and those submissions, but we know that a fraction of notifications are failing for very large submissions. We are continuing to work on a fix for this issue. -IF

22 Jul 2025 19:39:31 (3 days ago)

Identified: We are continuing to work on a fix for this issue.

21 Jul 2025 12:42:16 (4 days ago)

Identified: Yesterday's release did fix delivery of notification emails for many submissions, but we still have a small minority of notification emails that are going undelivered. Our technical team continues to work on a fix. -IF

17 Jul 2025 16:29:36 (8 days ago)

Identified: We'll have an emergency, unplanned release (https://status.crossref.org/incidents/c5nyp41k6vx5) in ~20 minutes to address the ongoing errors with delivery of notification emails after registrations.

During that release window - from 1500 to 1700 UTC today - our members may experience delays in deposit system admin tool (doi.crossref.org) processing. Deposits submitted during this time will be stored and processed after the emergency maintenance has been completed.

16 Jul 2025 14:40:18 (9 days ago)

Identified: We are continuing to work on a fix for this issue.

15 Jul 2025 20:51:20 (10 days ago)

Identified: Delivery of email notifications of submission logs following a registration (for Simple Text Query form, web deposit form, and XML submissions) has been restored for many members and their submissions. We are working to remedy the other outstanding errors that are causing some email notifications to go undelivered. -IF

14 Jul 2025 17:42:48 (11 days ago)

Identified: Delivery of email notifications of submission logs following a registration (for Simple Text Query form, web deposit form, and XML submissions) began failing again late yesterday. Our technical team continues to work on a fix. -IF

12 Jul 2025 15:20:13 (13 days ago)

Monitoring: Submissions from Metadata Manager and the Simple Text Query form have been restored. Unfortunately, delivery of email notifications of submission logs following a registration (for Simple Text Query form, web deposit form, and XML submissions) do appear to be delayed. We believe this is due to the volume of notification emails in the system, and the result of quite a backlog there. We are monitoring. -IF

11 Jul 2025 21:16:58 (14 days ago)

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

11 Jul 2025 15:22:48 (14 days ago)

Identified: We are continuing to work on a fix for this issue.

11 Jul 2025 14:08:09 (14 days ago)

Identified: We'll have an emergency, unplanned release (https://status.crossref.org/incidents/1c42q5j29ds2) in ~30 minutes to address the ongoing issues with Metadata Manager and newly reported errors with delivery of notification emails after registrations.

During that release window - from 1430 to 1630 today - our members may experience delays in deposit system admin tool (doi.crossref.org) processing. Deposits submitted during this time will be stored and processed after the emergency maintenance has been completed.

11 Jul 2025 14:08:04 (14 days ago)

Identified: Errors to Crossmark dialog boxes have been fixed, as you can see with this example: https://crossmark.crossref.org/dialog/?doi=10.36676/girt.v12.i1.109&domain=pdf

We're continuing to work on Metadata Manager and the Simple Text Query form. -IF

10 Jul 2025 20:36:40 (15 days ago)

Identified: We are continuing to work on a fix for the errors present with Metadata Manager registrations. We have also identified errors with reference registrations via the Simple Text Query form (https://apps.crossref.org/SimpleTextQuery/) and errors in the display of Crossmark dialog boxes (e.g., https://crossmark.crossref.org/dialog/?doi=10.3233/JIFS-179309&domain=pdf). -IF

10 Jul 2025 19:21:18 (15 days ago)

Identified: The issue has been identified and we continue to work on a fix for Metadata Manager registrations that are failing with the 'TypeError' error messages. We have deployed a fix for the depositor reports. That issue is resolved (e.g., https://data.crossref.org/depositorreport?pubid=J458872). -IF

10 Jul 2025 14:08:19 (15 days ago)

Investigating: As a result of our recent AWS migration (https://status.crossref.org/incidents/s92nm4xn1w84), Metadata Manager submissions are currently returning 'TypeError' error messages and our depositor reports are returning a 404 'Not Found' status code error message. Our technical team is working on a fix. -IF

10 Jul 2025 03:19:33 (16 days ago)

See all updates

Public content negotiation

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Polite content negotiation

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Crossref Metadata Plus

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Plus REST API

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Some indexing of metadata failing at the REST API (8 and 16-20 July)

Started 21 Jul 2025 12:45:49 (4 days ago), still ongoing

Minor Incident

Identified

Public REST API

Plus REST API

Polite REST API

We have found that some records failed to be indexed by the REST API on 8 July and then again from 16 to 20 July. We believe this is related to our recent data centre migration (https://status.crossref.org/incidents/s92nm4xn1w84). Our technical team is investigating. -IF

See all updates

Plus OAI-PMH

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Sat 19

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Thu 24

now

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

Started 23 Jul 2025 19:12:26 (2 days ago), still ongoing

Minor Incident

Investigating

Plus OAI-PMH

OAI-PMH

We have had metadata users report that they are receiving intermittent 504 (Gateway time-out) status code errors on calls to OAI-PMH endpoints. We have been able to replicate and are currently investigating. -IF

See all updates

XML Snapshots

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JSON Snapshots

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Plus content negotiation

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Key Manager

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Crossref Content Registration

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Admin tool

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15 October - weekly maintenance, release v0.207.0

Started 14 Oct 2024 13:02:20 (9 months ago), still ongoing

Incident without Impact

Investigating

Admin tool

Metadata Manager

Test admin tool

Web deposit form

Record registration form

We will be undergoing scheduled maintenance - release v0.207.0 - on Tuesday, 15 October from 1400 to 1600 UTC. Our members may experience delays in deposit system admin tool (doi.crossref.org) processing. Deposits submitted during this time will be stored and processed after the maintenance has been completed. - KL

Test admin tool

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15 October - weekly maintenance, release v0.207.0

Started 14 Oct 2024 13:02:20 (9 months ago), still ongoing

Incident without Impact

Investigating

Admin tool

Metadata Manager

Test admin tool

Web deposit form

Record registration form

We will be undergoing scheduled maintenance - release v0.207.0 - on Tuesday, 15 October from 1400 to 1600 UTC. Our members may experience delays in deposit system admin tool (doi.crossref.org) processing. Deposits submitted during this time will be stored and processed after the maintenance has been completed. - KL

Web deposit form

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15 October - weekly maintenance, release v0.207.0

Started 14 Oct 2024 13:02:20 (9 months ago), still ongoing

Incident without Impact

Investigating

Admin tool

Metadata Manager

Test admin tool

Web deposit form

Record registration form

We will be undergoing scheduled maintenance - release v0.207.0 - on Tuesday, 15 October from 1400 to 1600 UTC. Our members may experience delays in deposit system admin tool (doi.crossref.org) processing. Deposits submitted during this time will be stored and processed after the maintenance has been completed. - KL

Record registration form

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15 October - weekly maintenance, release v0.207.0

Started 14 Oct 2024 13:02:20 (9 months ago), still ongoing

Incident without Impact

Investigating

Admin tool

Metadata Manager

Test admin tool

Web deposit form

Record registration form

We will be undergoing scheduled maintenance - release v0.207.0 - on Tuesday, 15 October from 1400 to 1600 UTC. Our members may experience delays in deposit system admin tool (doi.crossref.org) processing. Deposits submitted during this time will be stored and processed after the maintenance has been completed. - KL

Crossref Metadata files

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Open Funder Registry

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Retraction Watch

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Annual public data files

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Crossref Sites

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Crossref website

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Crossref support

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Metadata search

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Participation reports

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Crossref Integrations and external dependencies

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Handle servers

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Monitoring of iThenticate can be seen at https://turnitin.statuspage.io.

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AWS cloudfront

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ORCID Auto-update

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Crossref Meta

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deliberately-unreliable server

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Demo Auth

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Crossref Beta

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Metadata Manager

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15 October - weekly maintenance, release v0.207.0

Started 14 Oct 2024 13:02:20 (9 months ago), still ongoing

Incident without Impact

Investigating

Admin tool

Metadata Manager

Test admin tool

Web deposit form

Record registration form

We will be undergoing scheduled maintenance - release v0.207.0 - on Tuesday, 15 October from 1400 to 1600 UTC. Our members may experience delays in deposit system admin tool (doi.crossref.org) processing. Deposits submitted during this time will be stored and processed after the maintenance has been completed. - KL

Failed delivery of notification emails after registration

Started 11 Jul 2025 21:16:58 (14 days ago), still ongoing

Minor Incident

Identified

Metadata Manager

Crossmark dialog server

As a result of our recent AWS migration (https://status.crossref.org/incidents/s92nm4xn1w84), Metadata Manager submissions are currently returning 'TypeError' error messages and our depositor reports are returning a 404 'Not Found' status code error message. Our technical team is working on a fix. -IF

Identified: We are continuing to work on a fix for this issue.

23 Jul 2025 20:20:22 (2 days ago)

Identified: We have resolved the problems for the vast majority of members and those submissions, but we know that a fraction of notifications are failing for very large submissions. We are continuing to work on a fix for this issue. -IF

22 Jul 2025 19:39:31 (3 days ago)

Identified: We are continuing to work on a fix for this issue.

21 Jul 2025 12:42:16 (4 days ago)

Identified: Yesterday's release did fix delivery of notification emails for many submissions, but we still have a small minority of notification emails that are going undelivered. Our technical team continues to work on a fix. -IF

17 Jul 2025 16:29:36 (8 days ago)

Identified: We'll have an emergency, unplanned release (https://status.crossref.org/incidents/c5nyp41k6vx5) in ~20 minutes to address the ongoing errors with delivery of notification emails after registrations.

During that release window - from 1500 to 1700 UTC today - our members may experience delays in deposit system admin tool (doi.crossref.org) processing. Deposits submitted during this time will be stored and processed after the emergency maintenance has been completed.

16 Jul 2025 14:40:18 (9 days ago)

Identified: We are continuing to work on a fix for this issue.

15 Jul 2025 20:51:20 (10 days ago)

Identified: Delivery of email notifications of submission logs following a registration (for Simple Text Query form, web deposit form, and XML submissions) has been restored for many members and their submissions. We are working to remedy the other outstanding errors that are causing some email notifications to go undelivered. -IF

14 Jul 2025 17:42:48 (11 days ago)

Identified: Delivery of email notifications of submission logs following a registration (for Simple Text Query form, web deposit form, and XML submissions) began failing again late yesterday. Our technical team continues to work on a fix. -IF

12 Jul 2025 15:20:13 (13 days ago)

Monitoring: Submissions from Metadata Manager and the Simple Text Query form have been restored. Unfortunately, delivery of email notifications of submission logs following a registration (for Simple Text Query form, web deposit form, and XML submissions) do appear to be delayed. We believe this is due to the volume of notification emails in the system, and the result of quite a backlog there. We are monitoring. -IF

11 Jul 2025 21:16:58 (14 days ago)

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

11 Jul 2025 15:22:48 (14 days ago)

Identified: We are continuing to work on a fix for this issue.

11 Jul 2025 14:08:09 (14 days ago)

Identified: We'll have an emergency, unplanned release (https://status.crossref.org/incidents/1c42q5j29ds2) in ~30 minutes to address the ongoing issues with Metadata Manager and newly reported errors with delivery of notification emails after registrations.

During that release window - from 1430 to 1630 today - our members may experience delays in deposit system admin tool (doi.crossref.org) processing. Deposits submitted during this time will be stored and processed after the emergency maintenance has been completed.

11 Jul 2025 14:08:04 (14 days ago)

Identified: Errors to Crossmark dialog boxes have been fixed, as you can see with this example: https://crossmark.crossref.org/dialog/?doi=10.36676/girt.v12.i1.109&domain=pdf

We're continuing to work on Metadata Manager and the Simple Text Query form. -IF

10 Jul 2025 20:36:40 (15 days ago)

Identified: We are continuing to work on a fix for the errors present with Metadata Manager registrations. We have also identified errors with reference registrations via the Simple Text Query form (https://apps.crossref.org/SimpleTextQuery/) and errors in the display of Crossmark dialog boxes (e.g., https://crossmark.crossref.org/dialog/?doi=10.3233/JIFS-179309&domain=pdf). -IF

10 Jul 2025 19:21:18 (15 days ago)

Identified: The issue has been identified and we continue to work on a fix for Metadata Manager registrations that are failing with the 'TypeError' error messages. We have deployed a fix for the depositor reports. That issue is resolved (e.g., https://data.crossref.org/depositorreport?pubid=J458872). -IF

10 Jul 2025 14:08:19 (15 days ago)

Investigating: As a result of our recent AWS migration (https://status.crossref.org/incidents/s92nm4xn1w84), Metadata Manager submissions are currently returning 'TypeError' error messages and our depositor reports are returning a 404 'Not Found' status code error message. Our technical team is working on a fix. -IF

10 Jul 2025 03:19:33 (16 days ago)

See all updates

Crossref Status

Real-time updates of Crossref issues and outages

Crossref status is Partially Degraded Service

Crossref APIs

Public REST API

Polite REST API

OAI-PMH

Crossmark dialog server

Crossref Metadata Plus

Plus REST API

Active Incidents

Recently Resolved Incidents

Crossref Outage Survival Guide

Crossref Components

Crossref

Crossref APIs

Public REST API

Polite REST API

OAI-PMH

XML API

Event Data Query API

OpenURL

Crossmark dialog server

Public content negotiation

Polite content negotiation

Crossref Metadata Plus

Plus REST API

Plus OAI-PMH

XML Snapshots

JSON Snapshots

Plus content negotiation

Key Manager

Crossref Content Registration

Admin tool

Test admin tool

Web deposit form

Record registration form

Crossref Metadata files

Open Funder Registry

Retraction Watch

Annual public data files

Crossref Sites

Crossref website

Crossref support

Metadata search

Participation reports

Crossref Integrations and external dependencies

Handle servers

Monitoring of iThenticate can be seen at https://turnitin.statuspage.io.

AWS cloudfront

ORCID Auto-update

Crossref Meta

deliberately-unreliable server

Demo Auth

Crossref Beta

Metadata Manager

Crossref Alternatives

The DOI Foundation

DataCite